Created JPA Mapping for Sakai and Sakvv Tables

+ Sakvv is covered completely
+ Removed old stuff in data/ and mockup/
+ Improved Performance of web app
  - js libraries, modules, css files, templates are
    concatenated and gzipped now
+ JPA Entities implement now a fluent interface
+ Installer creates Days and Timeslots
+ New Module 'Backup' allows for import/export of data
+ New Module 'SakaiLink' allows for connecting with a Sakvv-Database
+ New Module 'SakaiVV' demos how to use SakaiLink
+ Split Editor into Editor and EditorMenu (not finished yet)
+ Various improvements to util functions, Scuttle-Web-Classes.