Imported some of the GPLv3'd changes from RhodeCode v2.2.5.

This imports changes between changesets 21af6c4eab3d and 6177597791c2 in
RhodeCode's original repository, including only changes to Python files and HTML.

RhodeCode clearly licensed its changes to these files under GPLv3
in their /LICENSE file, which states the following:
The Python code and integrated HTML are licensed under the GPLv3 license.

(See:
https://code.rhodecode.com/rhodecode/files/v2.2.5/LICENSE
or
http://web.archive.org/web/20140512193334/https://code.rhodecode.com/rhodecode/files/f3b123159901f15426d18e3dc395e8369f70ebe0/LICENSE
for an online copy of that LICENSE file)

Conservancy reviewed these changes and confirmed that they can be licensed as
a whole to the Kallithea project under GPLv3-only.

While some of the contents committed herein are clearly licensed
GPLv3-or-later, on the whole we must assume the are GPLv3-only, since the
statement above from RhodeCode indicates that they intend GPLv3-only as their
license, per GPLv3§14 and other relevant sections of GPLv3.

removed encodeURIComponent, on url generation.
pyroutes internally do this so double escaping caused issues with
branch switcher

fixed issue with formatting escaping on url used in changelog js.
Switched everything to pyroutes

changelog: encode branch names with

ref: https://secure.rhodecode.org/rhodecode-fork-kiilerix/changeset/e175420889dc0d2f530bde8e094cc314e129d1a6

Use changelog controller for displaying history of files.
step 1 for removing obsolete shortlog

shortlog: show all refs (bookmarks,tags,branches) in one dedicated column
- rename confusing name bookbook to booktag (as others similar names)

changelog / compare: adjust titles

Clarify what shows changesets and what more see changesets as revisions that
specify snapshots that are compared.

improved title consistency
- changed - into dots to save space

Repo size - show just the size without duplicating text
bring back numeric revision into changelog
Fixed tests

Fixing missing icons.
Removing the breadcrumb from the box header, so it will only be on the context bar.

Adding the context bar too all pages related to a Repository.
Deleted top menu items that are on the context bar already.

changelog: fix page state after clearing selection

It was a mess. Now it is less of a mess.

compare/pullrequest: introduce merge parameter

This is more correct and flexible than the old way of looking on same/different
repo.

pullrequest: pullrequest from changelog view

It seems like it didn't work ... perhaps because I broke it. But now we clean
it up and make it work:

Use rev_end as the revision to merge. We don't know where to merge ... but
start_rev cannot be used for that.

This might to some extent have been working before ... but we prefer to clean
it up and start over again when the normal merge workflow is fully working.

changelog: "compare fork with parent" should only be shown when no changesets selected

It do not use the selected changeset - showing the option is confusing.

Greying out would perhaps be better ... but the button is already grey.

changelog: don't select all checkboxes in the middle

The changesets in the log might not be linearly connected and intermediate
changesets might not be a part of the operation the range is used for.

Some way of highlighting the two selected changesets and some radio button
functionality would however be nice.

compare: swap org and other when they refer to different repos, ie are pull request style

Pull requests will have a different from/to description - but in a consistent
and slightly better way that can be improved later.

A pull request diff is empathic: "How will this look for the peer I'm proposing to" style.

compare: rename optional compare_url parameter repo to other_repo

At the same time it is placed before other_ref_type and other_ref. Just to keep
a logical flow and (a new) consistency that will help the next refactoring.

Basic implementation of cherry picking changesets
for pull request, ref #575

Enabled compare engine for tags
Implemented compare engine for git repositories

new patch function, and urls schema.
now rhodecode generates
- diff
- plain diff
- patch files

both for git and hg

Don't allow cherry picking changesets from the changelog using checkboxes.
Change pull request text that will indicate opening pull request against checkec changesets

- added commenting to pull requests
- it's now possible to change pull request status via changeset status option
- status flags with associated pull requests are links to pull request they been
changed in

Added h.tooltip to all places that tooltip_title is used.
- improved escaping of < and > inside tooltips

removed wrap paragraphs from commit messages as it broke formatting.
- commits are still properly formatted by css