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.

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.

diff parser: redefined operations stats for changes

- don't loose info about multiple operations like rename + chmod
- new Binary flag when dealing with binary file operations
- fixed diffs after mercurial 2.6 when GIT binary diffs were fixed
- added more tests for multiple operations

- refactored the way diffprocessor returns data. It's
now easier to extract type of operation on binary files
- diffprocessor doesn't append that information into the diff itself

moved around some code in changeset controllers to properly log which function was decorated.
Before it was always index, and permission were checked twice giving unnneded overhead

auth decorators are not used anymore on __before__
- this will allow to create a whitelist of API enabled controller functions
- moved around functions with _ to beginning of the files to make it cleaner

missing changesets should return 404 not redirect + flash.
It feels more correct.

notifications changes
- closing pull requests will give notification about it
- more detailed notifications about commenting on changesets and pull requests

access control: fix owner checks - they were always true

The lambda expressions seems to be left over from something else. They were no
longer executed and thus always evaluated to true.

Some of the functions also failed if they were executed.

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

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

both for git and hg

Implemented generation of changesets based
on whole diff instead of per file diff. That
can give a big speed improvement for large changesets in
repositories with large history.
- improved handling of binary files
- show renames of binary files
- implemented new diff limit functionality
- unify diff generation between hg and git
- Added binary indicators for changed files,
- added diff lib tests

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

Bumped mercurial version to 2.3
- fixed issues with compare of two remote repos at particular revisions
- added tests for cases when mercurial update broke code and tests didn't catch this
- removed obsolete EmptyChangeset from the rhodecode code

Forbid changing changset status when it is associated with a closed pull request
- fixed some issues with cascade deleting repos with changeset statuses attached

Added dynamic data loading for other repo we open pull request against
- fixed notification emails, now with link to comment or status change in given pull request

- 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

- pull request generates overview based on it's params
- added page to show all pull-requests for a repository
- db schema changes to support comments and inline comments for pull-requests

Implemented #467 Journal logs comments on changesets
- added created/updated user action to journal
- added created/updated users group action journal
- added ip adresses to most of action_log calls to track IP changes
- rewrote action_parser to simpler and more efficient solution

Added mentions autocomplete into main comments form
- recompiled yui.2.9.js using google compiler

Show changes of status inside comments
- comments that change status are now associated with status object, and showed in comments blocks

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

added hidden fulldiff GET param for disabling big diff cut off limit.
fixed context toggle options on single file diff

fixed vcs issue with last_changeset for filenodes
- fixed incosistency for displaying revision in file browser
- fixed raw_diff for git for single file mode
- file block now uses associated changeset for both git&hg

fixed raw_changeset for git, accidentally it was generated with hg patch headers
- Code garden

implements #308 rewrote diffs to enable displaying full diff on each file
- fixed escaping of html special chars in file editor

code garden for changeset ranges and comments
- disabled (for now) comments on changeset ranges
- code reuse by mako namespaces
- added flag for enabling comments in diffs

implements #307, configurable diffs
- global context increase and whitespace
- perfile context and whitespace
- fixed anchor links support

moved soon-to-be-deleted code from vcs to rhodecode
- diff lib
- annotate highlighter

Added handling of ignore whitespace flag in changesets
- fixed messages for FK validation

commit less models
- models don't do any commits(with few exceptions)
- all db transactions should be handled by higher level modules like controllers, celery tasks

Notification system improvements
- deleting
- tests
- ui
- moved to separate controller

#71 code-review
- simple inline comments

#71 code review
- added delete of comments by owner or admin

#77 code review
- initial very simple version of changeset comments
- RST parsed

implemented #44 - branch filtering in changelog, aka branch browser
- changed GUI on tags/branches to not use images.

fixed issues with python2.5
added compat module to rhodecode to have one point of fetching backward incompatible libs.