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.

removed duplicate code that set os.environ['RC_SCM_DATA']
this was done via __inject_extras anyway

follow Python conventions for boolean values

True and False might be singletons and the "default" values for "boolean"
expressions, but "all" values in Python has a boolean value and should be
evaluated as such. Checking with 'is True' and 'is False' is thus confusing,
error prone and unnessarily complex.

If we anywhere rely and nullable boolean fields from the database layer and
don't want the null value to be treated as False then we should check
explicitly for null with 'is None'.

Switched handling of RhodeCode extra params in consistent way
- use only os.environ for both hg and git
- hacking ui objects was bad
- os.environ allows easier to call rhodecode hooks externally

configurable locking codes.
- this allows changing the default 423 LOCKED code to 2XX codes which don't break the transactions. Insted
it gives users a warning for push.

git hook handler shouldn't ever use cache instances
- moved cache invalidation into finally block so we invalidate at latest possible stage
- added scm_instance_no_cache property to get non cached scm instances always

git hook handler shouldn't ever use cache instances
- moved cache invalidation into finally block so we invalidate at latest possible stage
- added scm_instance_no_cache property to get non cached scm instances always

logging: include more info in action logging

These messages are very frequent and thus shows what is going on on the server
- and it is nice to have some extra information to give some context for other
messages that might be logged.

Added UserIpMap interface for allowed IP addresses and IP restriction access
ref #264 IP restriction for users and user groups

Implemented #628: Pass server URL to rc-extensions hooks
- updated rc-ext docs

Implemented basic locking functionality.

- Reimplemented how githooks behave
- emaulate pre-receive hook
- install missing git hooks if they aren't already in repo

use os.environ as a fallback for getting special info from hooks, this will allow
calling RhodeCode hooks from outside the system eg. via SSH
- also verify repo if it's a correct VCS throw 404 error otherwise

Implementes #509 require SSL flag now works for both git and mercurial.
- check is done at earlies possible stage
- if detected protocol is not https and flag require is there RhodeCode will
return HTTP Error 406: Not Acceptable, before even checking credentials
- removed push_ssl flag from mercurial UI objects since that would duplicate logic

possible fix for #486 undefined variable username
- cleaned a code on git/hg middleware

Added HTTP_X_FORWARDED_FOR as another method of extracting IP for pull/push logs.
- moved all to base controller

utils/conf
- created temporary utils2
- made config.conf for storing some configurations
- fixed some dependency import problems
- code cleanup
- rc-extensions now properly work for celery

fixed some unicode problems with waitress
- fixed clonning repos from non-ascii groups

backported fixes for issue #318
- session cleanup for mercurial and git middlewares

Wrapped calls for git and hg middleware in extra block that clears db Session.
tries to fix #318

#176 LookupError: 00changelog.i@66f0739d7517: no node
- fixed mercurial concurency bug. While there were many concurrent request to different repos at one time, sometimes there were race conditions that caused mercurial backend to mix up repository instance with current repo path from environ, a major rewrite of the middleware fixed that.

merged found bugs and fixed for stable release:

- added force https option into ini files for easier https usage (no need to
set server headers with this options)
- small css updates
- fixed #96 redirect loop on files view on repositories without changesets
- fixed #97 unicode string passed into server header in special cases (mod_wsgi)
and server crashed with errors
- fixed large tooltips problems on main page
- fixed #92 whoosh indexer is more error proof

Rewrite simehg for enabling cloning with raw url for anonymous access + some optimizations for making less queries when authenticating users.
added debug to test hg operations

project refactoring, cleaned up lib.utils from rarly used functions, and place them
in proper controllers
moves is_git is_hg functions to the middleware classes

Moved out reposcan into hg Model.
Rewrote repo scann and caching of repositories, all is in hgModel.
Changed invalidate cache calls.
mergeds main repo list and repo switcher list into one new based on hgModel.

propagate changes for #48 into simplegit.
Removed obsolete print

Code refactoring,models renames
cleaned up sqlalchemy sessions,
added cache support to most queries in models
fixed test.ini file