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.

Fixed bug with log_delete hook didn't properly store
user who triggered delete action

Implemented simple gist functionality ref #530.

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

managing users groups enforce permissions checks.
User needs at least a read permissions on usergroup to be able
to assign it somewhere.

- 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

repo rescann should detach forks of zombie repos,
this way we ensure we do proper cleanup of such repos.

recursive forks detach
- added API attrs for option to delete or detach forks
- deleting repos with attached forks raises an special Exception

#749 and #516 Removed dupliciting of repo settings for rhodecode admins and repo admins
- repo admin now is allowed the same set of operations as the rhodecode admin
- single logic for forms/validations/permissions
- fixes #805 update external repo via webinterface
-

moved permission management into separate entity.
- this solves issues when whole form submision could influence permission management
particular case is that when repo group permission is revoked and user is no longer able to update repository settings

Update changeset cache should use non-cache version of repo if given attribute is empty, it's easier to controll how changesets are udpated
The quick update logic in base controller get's cached version and updates, while any other call will use non-cached version

further cleanup of UsersGroup

Renaming some names ... but trying not to change API or database scheme.

Added missing migrations, and move update_repoinfo to RepoModel
migrations now update repo cache

repository extra fields implementation
- verion bump to 1.6
- migrations

API methods create_repo, fork_repo, delete_repo, get_repo, get_repos
can be executed by non-admin users ref #539

Use common function for generation of grid data
- admin grid now has dedicated edit button, and uses changeset_cache
- some small improvements to grid
- all other datatables use this

Default parameters are now also used for creating repos using API calls, and initial repo scanner
- added new parameters to API call to override defaults
- docs update
- repo_type is now optional as it's a part of defaults

Fixed some issues with edit form
- unified code (but still a lot of duplicated code left over)
- fixed forms
- fixed validators

Implemented #379 defaults settings page for creation of repositories
- locking
- statistics, downloads
- repository type

Permissions on group can be set in recursive mode setting defined permission to all children
- more explicit permissions
- fixes for empty values in permission form

Refactored create fork function to use new RepoModel functions instead of old
soon-to-be-destroyed functions

Created install_git_hook more verbose version of previos code.
- allows autoupdating hooks in later releases

Added functional test create repo with a group
- unified calling Session in tests

New repo model create function
- fixed some sessions calls

chmod the hooks to 755, like all other githooks.
fix hook template name

Git Hooks are automatically installed in new repos
- fixed issue with initial push
- changed git pre-receive hook template to py file

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

#227 Initial version of repository groups permissions system
- implemented none/read/write/admin permissions for groups
- wrote more tests for permissions, and new permissions groups
- a lot of code garden, splitted logic into proper models
- permissions on groups doesn't propagate yet to repositories
- deprecated some methods on api for managing permissions on
repositories for users, and users groups

garden
- unified logging formatting to use only %

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

#235 forking page repo group selection
- group is selected as parent repo
- refactoring of session behavior to get more atomic operations in models

fixes #288
- added group management into non admin repo settings form
- fixes also issues with groups after API codes merge
- all tests passes ok.

Fixed methods for checking if path in routes is a repo
added method for checking if path in route is a repos_group

fixes #200, rewrote the whole caching mechanism to get rid of such problems. Now cached instances are attached
to db repository instance, and then fetched from cache. Also made all current test work.