ReleaseNotes-2.4

### WARNING:
### WARNING: This version is currently NOT for production use!
### WARNING:

Temporary Problems:
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 * Migration to Ruby 1.9 and Rails 3.2, WIP

 * hidden projects are not always hidden atm

 * No gui interface for managing users and groups. api
   routes have to be enhanced and webui needs to get support 
   for using it.



Changes on purpose for 2.4:
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Changes
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* Requests do require a description now in any case

* database driver needs to be changed to "mysql2" in /srv/www/obs/api/config/database.yml