Fixing issues of cache invalidation for multiple instances running in rhodecode.
- during server start always register all cache keys for all repositories
- Don't clear cache markers on start since multiple instances can clear each other out

Remove null from revision column as for comments inside pull requests to work properly
new migration adds column for future simpler main page

Step6a for migrations from 1.3.6
to 1.4.0

Implemented #532.
- now displaying username + full name for mapped users from RhodeCode

Implemented basic locking functionality.

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

added highlight lines field in ChangesetComments, will be used
later for attaching comments to blocks

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

Added form for controlling mercurial extensions
added hggit also for future

fixed the push_ssl issues after mercurial 2.3 upgrade.
Set always to false, since rhodecode handles that by dedicated middleware.

Forbid changing changset status when it is associated with a closed pull request
- fixed some issues with cascade deleting repos with changeset statuses attached

merged + fixed pull request #62: Implemented metatags and visualisation options.
- new tag lang
- fixed found issues
- added simple test

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

cascade fixes for comments/pull-requests/reviewers
when deleting a repo. Just CLEAN ALL !

Readme renderer now uses landing_rev parameter to render the readme based on
given revision, rather than tip

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

return proper id from users_group
update api docs

Fixed calls to Session in db model
- added inject_ui method that should be later used for all injections of extra parameters into ui
- fixed naming conflict of `comments` functions and relationship that had the same name

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

- 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

Removed hardcoded hooks names from settings.
Added helper for getting repos_location

Implemented cache-map on main page to save executing select
statements that checks if cache should be invalidated.
It reduces number of executed queries from N which is number of
repos to 1 which is needed to fetch all keys from database.
On pages with large number of repos this could reduce load time by half

Show changes of status inside comments
- comments that change status are now associated with status object, and showed in comments blocks

added hidden fulldiff GET param for disabling big diff cut off limit.
fixed context toggle options on single file diff

Mysql fixes
- force INNODB engine
- set utf8 charset
- fix convert_unicode flag in .ini files
- fix constraints and FK

- #347 when running multiple RhodeCode instances, properly invalidates cache
for all registered servers
- server start also clears all cache keys now

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

updated CONTRIBUTORS
- code garden

implements #212 moved default encoding variable into rhodecode-config. It's now possible to change
default utf8 to some other encoding.
- also added instance-id to config
- update ini files

fixed issue with hybrid property for ldap_active
- some small fixes for cache_keys functions

#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 %

renamed repo groups table
- code garden

#344 optional firstname lastname on user creation
- on display fallback to username if both empty