init: remove stale unicorn.pid file
init: remove stale redmine.socket file
Merge branch 'cleanup-before-start'

Fixes #51
init: install cronjob to fetch commits before the plugin and themes installation

Fixes #50
install: copy database.yml before installing the gems
install: remove installation of fastercsv and yard gems. Not needed anymore
install: remove duplicate pg and mysql2 gem entries from the Gemfile
Merge branch 'resolve-gem-warnings'

Fixes #53
config: rebase the nginx config templates on the GitLab templates
Merge remote-tracking branch 'upstream/master'
Drone config added