The new URL to our gitlab is now https://gitlab.nic.cz.
Our turris-build repository was moved to turris/os/build.

This introduces primarily project specific config that includes new
scripts and hook.

Hook checks if commit we push to Gitlab server are correct. There are
multiple checks:
* Check naming convention
* Check base (master vs develop)
* Protect against forgotten develop push when pushing master

In terms of aliases this adds:
git new-mr:
  This opens web browser with new merge request on https://gitlab.nic.cz
  for current branch.
git new-banch:
  This creates new branch interactively and should help users with
  naming convention.