old style: make settings box expand to contain floating content and show menu nicely

The floating of the panes is hardcoded, so we also hardcode the necessary overflow auto.

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.

#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

repository: cleanup and alignment of repository editing templates

Too much duplicated code.

improved title consistency
- changed - into dots to save space

Fixing missing icons.
Removing the breadcrumb from the box header, so it will only be on the context bar.

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

implemented #689 Deleting Repositories with Forks Should Be Easier
- optionally detach or delete forks associated to repo

repository extra fields implementation
- verion bump to 1.6
- migrations

added delete button into repository settings form, it makes more natural to have it there.
Users where confused by my account -> my repos where deletion is also possible

Cleaned the way cache keys are invalidated
should fix issue #504 RhodeCode is showing different
versions of README on different summary page loads

Implemented basic locking functionality.

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

Initial version of landing revisions ref #483
- fixed relevant tests for creation of repo
- added some tests for git

UI
- added clone-url into edit form on /settings page
- added help text into repo add/edit forms

#47 implemented Adding of new repo_groups+forms+validators. Fixed sorting of repo groups by main names in multiple locations. Removed some unneeded calls to self.sa for exchange to .query() methods.
Added new db unique key for Group

#109, added manual pull of changes for repositories that have remote location filled in.
This also logs this action in journal

#109, added optional clone uri when creating repo.
Cleaned up repos controller moved common code into __load_data

implemented public journal for anonymous users, admin can control which repositories
are visible in such journal in admin panel

#56 added ajax removal of users groups,
fixed permission edition templates by regular non admin users
found bugfixes in forms for users groups

#56 added users/groups autocomplete for repository editing.
added docstring for settings controller

added cache reset, stats reset, and delete into repository settings in admin.
Some small template fixes

Code refactor for auth func, preparing for ldap support
css updates.
turned off graph,and branches for git changelog

fixed bug when autocomplete could not display names (hidden by div)
fixed repo switch autostrech bug
some other tweeks for templates

extended size of some input fields
cleaned prints from tasks