add rake tasks for web hooks management
add help page for web hooks management using rake tasks
display permissions as a table
Update logic for validates_merge_request for tree of MR

For case:

Merge request №1: branch "feature" to "release" and remove "feature" branch

Merge request №2: branch "release" to "master" and remove "release" branch

Merge request №1 - broken :(
Improve repository graph
Use gitlab_git v2.0.0
Update gitlab_git to 2.0.1
Fix caching when using remote redis server
Allow project path being passed on project creation
Use native repo path for import task. Skip wiki repos
Update installation.md

Isn't 5.4 current stable?
Allos specify repository name when create a project
Fix ui issue for Help#api
Allow specify path when create project via api
Better text for custom repo name link
Fixed bug with invalid event author
Fixed bug with invalid event author for MR
Increase graphs height
Fix passign full user object instead of id to Event.create
Merge pull request #4778 from jkramarz/patch-1

Update installation.md