Added VCS adapter for GIT.
OTC-200
Added username and password parameters for GIT adapter.
OTC-200
Completed VCS adapter "GIT"
Merge branch 'feature/vcs/git'

Conflicts:
	application/language/cs/lang.php
	application/language/de/lang.php
	application/language/de_IN/lang.php
	application/language/en/lang.php
	application/language/es/lang.php
	application/language/fr/lang.php
	application/language/id/lang.php
	application/language/pt_BR/lang.php
	application/language/sv_SE/lang.php
	application/language/zh_CN/lang.php
	application/language/zh_TW/lang.php