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.

Iteration on default permissions
- added user groups default
- organized global permission form, and made it common for
users, and user groups
- form improvements and intructions

fixed sort of permissions summary it's now perm+name
unified permissions summary for users and user groups

sort permission lists by (repository) name

This also exhibits too much code in templates and code/template duplication.

improved title consistency
- changed - into dots to save space

Group management delegation:
this allows users to become an admin of groups
a group admin can manage a group, change it's name
or permissions. A group admin can create child group
only within a group he is an admin off.

Top-level group can be only created by super admins

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

Implemented #658 Changing username in LDAP-Mode should not be allowed.
Those username are autocreated, changing them will end up with new account creation after user logs
in again

fixed missing div on my_account + added nothing here yet when there are no
pull requests for user

RhodeCode now has a option to explicitly set forking permissions. ref #508
- changed the way permissons on users groups behave. Now explicit set on user
is more important than permission set on users group

Renamed name to firstname in forms
- added multiple test for edit my account and edit user from admin
- fixed issues with update user accounts from admin

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.

Fixed #161 form saves the create repository permission.
routing update for users to support second form posting.
models updates

Added api_key into user, api key get's generated again after password change
updated ini files

Improve LDAP authentication

* Adds an LDAP filter for locating the LDAP object
* Adds a search scope policy when using the Base DN
* Adds option required certificate policy when using LDAPS
* Adds attribute mapping for username, firstname, lastname, email
* Initializes rhodecode user using LDAP info (no longer uses "@ldap")
* Remembers the user object (DN) in the user table
* Updates admin interfaces
* Authenticates against actual user objects in LDAP
* Possibly other things.

Really, this should be extended to a list of LDAP configurations, but this is a good start.