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.

pull requests: use org_ref with correct symbolic name instead of fake one

So far this is only cosmetic, but it might make a difference for further
processing of a PR.

Implemented simple gist functionality ref #530.

- creation of public/private gists with given lifetime
- rhodecode-gist CLI for quick gist creation

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

create a list out of generator.
Generator gets exausted during later executions, and because it's used several times
it causes errors

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

pullrequests: fix reversed diff

b2575bdb847c missed the 'we swap org/other ref' part.

pullrequests: fix changesets ordering being reversed when creating new pull requests

41b4edf77b5b tried to make the displayed order of changeset consistent: The
topmost is always the latest.

That did however also reverse the ordering of the changesets sent back in the
post when used in the pull request creation form. Displaying the pull request
later on would reverse it again and thus show it in the 'wrong' order.

We now undo that reversing when creating the pull requests, and the stored data
will thus be the same as before.

diffs: drop diffs.differ

This function did not really add any value, it was yet another layer that was
hiding the bug that we use ref[1] without ref[0], and it had this strange
undefined behaviour for diffing across repos.

Inlining the call to .get_diff do not make the code more complex but makes it
more obvious what is going on so it can be cleaned up later.

pullrequests: fix non-js defaults for repo owner

Owner of default_other_repo was never sent to the the template ... and the
template would fail if it had been sent. Instead we set default_other_repo_info
to the other_repos_info struct and use that to find the owner.

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.

compare: cleanup of as_form handling

as_form is only used when loaded 'partial' from pullrequest.html. Including it
in the 'Detailed compare view' url did thus not do any harm.

as_form is never used in pullrequest_show.html or compare_diff.html and it is
thus never used together with swap_url ... which is why the wrong
'as_form=None' or 'as_form=False' in urls didn't do any harm.

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

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

set the status of changesets initially on pull request, and make sure we care of version collisions.
Fixes issues #690 and #587

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.

Implemented #670 Implementation of Roles in Pull Request
- only owner, reviewer or admin can change status or close pull request

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

Multiple changes for compare system
- count number of changed lines and files
- add combined compare button into the old per changeset compare
- fixed some logic for remote & bundle compare system
- added few tests for git compare

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

Fixed #585, checks for status of revision where to strict, and made opening pull request with those revision impossible due to previosly set status.
Checks now are made also for the repository.

#590 Add GET flag that controls the way the diff are generated, for pull requests we want to use non-bundle based diffs,
That are far better for doing code reviews. The /compare url still uses bundle compare for full comparision including the incoming changesets.
- Fixed tests

Fixed status of changesets in preview windows
- show what status was pull-requests closed with
- added alternative logic for showing that status (disabled for now)

Load generated revs while switching to other sources of pull-requests.
Issue before was that extra tags or bookmarks weren't present in the dropdown

new summary for opened pull requests
ref #523

added more validations when opening pull request
- fixed issues with moving tags/bookmarks/branches after opened pull-request
- no longer possible to open a pull-request without changesets
- title is required
- validate reviewers and revisions

Added autocomplete widget for pull request reviewers, in exchange of 90s style
multi select widget

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

Added basic models for saving open pull requests
- added pull-request models
- added pull-requests notifications into inbox