Conflicts:
	CHANGELOG
	VERSION
	app/views/admin/teams/projects/new.html.haml
	app/views/projects/teams/available.html.haml
	doc/install/installation.md

Fix Pygments 500 error if lexer not found by name

UI : navbar tooltip position fix when "loading" appears.

Additon of apis for fork administration.

Fix header text for setting greatest team access to a project

Added ability to add and remove the forked from/to relatioinship
between existing repos.

Fix broken API links, fixes #4463

Conflicts:
	Gemfile
	Gemfile.lock

minor contributing guide updates

* issues & pr in English
* appropriate language
* typo & format fix
* not catch all pull request
* update changelog

Added client list to API doc