files: use the web browsers built-in js history instead of native.history.js

The history API is available in all web browsers we support.

window.history.pushState is called to register a state that we can go
back/forward to. (But contrary to native.history.js, it doesn't do any
immediate processing of the state and doesn't actually navigate to it.)

When navigation occurs, we get the popstate event and invoke load_state to
actually load the state.

front-end: use At.js for MentionsAutoComplete

We want to get rid of YUI, and select2 is not well suited for this purpose.
So use At.js, which is made just for this use case.

Original implementation was modified by Mads Kiilerich.

front-end: Use DataTables from node_modules and stop bundling it

There is no minimized version in the npm package. For now, we just use the raw
one. We can minimize later.

front-end: Use select2 from node_modules and stop bundling it

select2 3.5.4 was added in 304e83e9bcde ... but the latest npm release in the 3
series is 3.5.1, so we use that one instead. We should probably upgrade to the
4 series.

The select2 images were not in the location the generated css pointed - now we
copy them from node_modules to the right location, next to the generated css.

Note: this will drop 190cb30841de "branches: fix performance of branch
selectors with many branches - only show the first 200 results" ... but it
should no longer be relevant now when we use server side filtering.

15e507047bae introduced select2-bootstrap.css - it is not clear what version
was used, but we use the latest 1.4.6 which also is very old.

front-end: Use jQuery and Flot from node_modules and stop bundling them

jquery.min.js 1.12.3 was introduced in 7a4dec17e837.

jquery.flot.js 0.8.3 was introduced in 322ce5147fe0.

fontello: update fontello version

Font awesome is also updated, so also update LICENSE.md.

js: introduce jquery.flot library - so far unused

Will be used to replace YUI flot.

Source files copied from https://github.com/flot/flot/tree/v0.8.3 .

DataTables: update to 1.10.13 and add files for Bootstrap

cp ../DataTables/media/css/jquery.dataTables.css kallithea/public/css/jquery.dataTables.css
cp ../DataTables/media/js/jquery.dataTables.min.js kallithea/public/js/jquery.dataTables.min.js

Also add a couple of files that will be used for Bootstrap:

cp ../DataTables/media/css/dataTables.bootstrap.css kallithea/public/less/3rd-party/dataTables.bootstrap.css
cp ../DataTables/media/js/dataTables.bootstrap.js kallithea/public/js/dataTables.bootstrap.js

db: add Alembic "migration environment"

Add in kallithea/alembic an unmodified Alembic "migration environment",
as generated by 'alembic init':

Copyright (C) 2009-2016 by Michael Bayer.
Alembic is a trademark of Michael Bayer.

Also update LICENSE, MANIFEST and setup metadata.

db: remove SQLAlchemy Migrate library and RhodeCode migration scripts

It is no longer used or referenced.

js: drop some unused parts of YUI

YUI is now only used for autocompletion and statistics.

codemirror: updated to version 4.7

wget http://codemirror.net/codemirror-4.7.zip
rm -rf codemirror-4.7 kallithea/public/codemirror/*
unzip codemirror-4.7.zip -x '*.html' '*/test.js'
mv codemirror-4.7/{LICENSE,lib,mode} kallithea/public/codemirror/
hg addremove kallithea/public/codemirror/

jquery: upgrade to 1.11.1

Downloaded with

$ wget -N http://code.jquery.com/jquery-1.11.1.min.js

The source is available at https://kallithea-scm.org/repos/mirror/jquery/ .

We stay with 1.x to remain compatible with IE8.

We no longer include the map file - it is no longer referenced from the js.

codemirror: move everything to separate codemirror folder - splitting it up in css and js serves no purpose

- but it should perhaps not show up directly in /codemirror ...

Correct licensing information in individual files.

The top-level license file is now LICENSE.md.

Also, in various places where there should have been joint copyright holders
listed, a single copyright holder was listed. It does not appear easy to add
a link to a large list of copyright holders in these places, so it simply
refers to the fact that various authors hold copyright.

In future, if an easy method is discovered to link to a list from those
places, we should do so.

Finally, text is added to LICENSE.md to point to where the full list of
copyright holders is, and that Kallithea as a whole is GPLv3'd.

First step in two-part process to rename directories to kallithea.
This first step is to change all references in the files where they refer
to the old directory name.

Update minified YUI to version 2.9 built from Source.

yui.2.9.js used to be a minified version of YUI 2.9 until 5143b8df576c updated
it to something else and applied more aggresive minification. We stick to a
clean but minified version 2.9.

The license of YUI is BSD 3-clause, as described on
http://yuilibrary.com/license/ .

Since the minified version combines with GPLv3'd Javascript, it is only GPLv3'd
compliant to distribute this Object Code version with the Corresponding Source
(or offer therefor).

This yui.2.9.js is built from Source this way:
git clone https://github.com/yui/builder
git clone https://github.com/yui/yui2
cd yui2/
git checkout hudson-yui2-2800
ln -sf JumpToPageDropDown.js src/paginator/js/JumpToPageDropdown.js # work around inconsistent casing
rm -f tmp.js
for m in yahoo event dom connection animation dragdrop element datasource autocomplete container event-delegate json datatable paginator; do
rm -f build/$m/$m.js; ( cd src/$m && ant build deploybuild ) && sed -e 's,@VERSION@,2.9.0,g' -e 's,@BUILD@,2800,g' build/$m/$m.js >> tmp.js
done
java -jar ../builder/componentbuild/lib/yuicompressor/yuicompressor-2.4.4.jar tmp.js -o yui.2.9.js

The source is mirrored and available on https://kallithea-scm.org/repos/mirror .

Incorporate CSS from select2-bootstrap-css & its license information.

RhodeCode 2.2.5 included a modified version of this upstream work. We
include herein the upstream version as downloaded and incorporated using the
following commands:

(cd /tmp; \
git clone https://github.com/t0m/select2-bootstrap-css
)
cp /tmp/select2-bootstrap-css/select2-bootstrap.css rhodecode/public/js/select2/

The content used to be appended to select2.css but we now keep it in a separate
file select2-bootstrap.css . This file could be included in root.html like
select2.css but we do currently not want to use bootstrap.

The license info was incorporated from /tmp/select2-bootstrap-css/LICENSE
into our LICENSE.md file.

Update LICENSE.md to include license information about Select2

License details were taken from the LICENSE file in Select2 distribution.

Migrate to Mergely 3.3.4.

RhodeCode 2.2.5 distributed Mergely 3.3.4 with some of the changes that
Mergely 3.3.3 in RhodeCode 1.7.2 also had. That do however not seem to be
changes we want for Kallithea this way and we take the 3.3.4 files as they are.

I've also included the Mergely license file, as downloaded from:
http://www.mergely.com/license.php

That LICENSE file is kept in HTML just as it was downloaded from their
website. While it's a bit annoying to keep the license file in HTML, this is
the way it came from upstream so we'll leave it that way.

Since the Javascript code is used with other GPLv3 Javascript, we are using the
GPL option of Mergely's tri-license.

Finally, note that previously, this was incorrectly called "mergerly", so the
opportunity is taken here to correct the name. That required changes to
diff_2way.html.

As commands::

$ wget -N --output-document LICENSE-MERGELY.html http://www.mergely.com/license.php
$ hg add LICENSE-MERGELY.html
$ hg mv rhodecode/public/css/mergerly.css rhodecode/public/css/mergely.css
$ hg mv rhodecode/public/js/mergerly.js rhodecode/public/js/mergely.js
$ sed -i 's,mergerly\.,mergely,g' rhodecode/templates/files/diff_2way.html
$ ( cd /tmp; \
wget -N http://www.mergely.com/releases/mergely-3.3.4.zip; \
unzip mergely-3.3.4.zip )
$ sha256sum /tmp/mergely-3.3.4.zip
87415d30494bbe829c248881aa7cdc0303f7e70b458a5f687615564d4498cc82 mergely-3.3.4.zip
$ cp /tmp/mergely-3.3.4/lib/mergely.js rhodecode/public/js/mergely.js
$ cp /tmp/mergely-3.3.4/lib/mergely.css rhodecode/public/css/mergely.css
$ sed -i -e '/^ \* Version/a\ *\n * NOTE by bkuhn@sfconservancy.org for Kallithea:\n * Mergely license appears at http://www.mergely.com/license.php and in LICENSE-MERGELY.html' rhodecode/public/js/mergely.js rhodecode/public/css/mergely.css

Update LICENSE.md to include license information about Codemirror 3.15

Add information to the LICENSE.md file to include the information provided in
the codemirror-3.15/LICENSE file.

Also, note that other license and copyright information also appears in
.../public/js/mode/ sub-directories.

Introduce LICENSE.md to include license information about Bootstrap 3.0.0

This creates a LICENSE.md file which will ultimately contain all relevant
licensing information for the project, but for the moment just contains
information about Boostrap 3.0.0 licensed under Apache License 2.0.

A copy of the Apache license is also herein included.