Added fixed systemd files

see pull request here:
https://github.com/gitlabhq/gitlab-recipes/pull/238
Added a TODO file
Updated PKGBUILD

- get rid of webserver detection clutter
- started adding /var/log/gitlab for log files
- adjusted code style accoding to arch conventions
- get rid of /proc/cpu thing. nproc from coreutils does the job.
Removed dolphin file
Adjusted logrotate file according to logdir
mkaurball creates .AURINFO for us