[ticket/102] Use B3P_U_ACTION instead of U_ACTION

U_ACTION couldn't be changed for some reason. Therefore we are now using our
own template variable.

B3P-102
[ticket/102] Make Welcome module settings html valid

B3P-102
[ticket/102] Fix menu module acp settings

B3P-102
[ticket/102] Add git-tools with commit and pre commit hooks

B3P-102
[ticket/102] Ignore git-tools on export

B3P-102