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.

UX: require confirmation of revoking permissions on
repos/user groups/repo groups. We don't want people to
click on this accidentally.

fixed hover loading ... info on lazy-cs
html objects

- Manage User’s Groups: create, delete, rename, add/remove users inside.
by user group admin.
In this case, a user's group can be owned by several people thru an owner user's group.

Some refactoring of naming, permission handling logic.
- remove some code duplicity as well as inconsistent naming

changelog / compare: adjust titles

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

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

review members are dynamically changed based on selected other_repo owner
- implemented pyroutes for smarter JS url handling
- fixed some old style global var routing

implements #636, lazy loading of history and authors to speed up page responsiveness.
- loading full history is not always needed, and it's very heavy operation. Now this is lazy loaded
when clicking on button

- add loading message on lazy loaded toolips for journals
- fixed callbacks on admin journal

new tooltip implementation
- added lazy loading of changeset tooltips for journal data

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

Reimplemented file-browser using partial-ajax
- improves the speed of browsing of files for revision
- url push state via html5 History
- also cache the results of calls for even faster handling the content

removed JSON array envelope from filter files function
- switched to translation map for labels in file filter

Autocomplete fixes
- use translation MAP
- move translation to top level in order to be used inside rhodecode.js
- re-use user and groups data in changesets page

#415: Adding comment to changeset causes reload
- comments are now added via ajax and doesn't reload the page

made upper menu always hover, looks nicer and produces less troubles
- added notification inbox into quick menu
- commented yet innactive compose message button

fixes #229 repo sorting is not working.
- implemented repo sorting using YUI dataTable

- diff.css merge to main style.css
- css fixes for diffs
- JS fixes for diff and inline comments

Fixed show more links.
improved gui for quick menu.