Added experimental clean script: kills everything related to redmine

should be used with care...
added reload postgres handler
Redmine 2.4, nginx dir variable, restart file

* redmine 2.4 from official hg
* nginx dir can be configured now
* restart file is fixed now, hopefully...
Plugin hacks for 2.4, git_hosting and dmsf fixed

* temp fix for stealth and extended_fields for current redmine and ruby / rails
* use /tmp instead of shm because of execution perms
* fixed git_hosting logfile perms
* don't overwrite custom hook when git_hosting config changes
* project_sections doesn't work currently, commented out
permanent hook fix for HTTPS git push problems
gitolite https fix was in the wrong position
use version 1.4.7 for redmine 2.4 compat
new plugins: etherpad, hide_emails_by_default, watchers_by_group
new plugins: autowatch, equip, ext_members-box, redmics
ruby 2.1, nginx robustness, dmsf version fixed

* ruby 2.1 changes:
** version bump
** add rvm use to make sure right ruby version is used
** get rvm-installer on each run, removed static script

* nginx initscript: pid loc changed to /var/run
* force nginx restart (has failed many times before)

* dmsf version string was wrong

* added tmux
use redmine as default group for redmine_adm, 2.4.2
new plugins:

- redmine_group_owners
- redmine_parent_issue_filter
- redmine_per_project_formatting
- redmine_private_wiki
- redmine_startpage
added redmine_contacts plugin