Merge pull request #44 from jbreitbart/master

Various update
JPA fix
Add resource names.
Merge pull request #45 from jbreitbart/master

Small log files fix
Merge pull request #46 from DeOb/master

Fix and web.xml
Merge pull request #48 from jbreitbart/master

Release preparations
Merge pull request #49 from jbreitbart/master

Small index.html fix
Merge pull request #50 from jbreitbart/master

Copyright
Merge pull request #51 from jbreitbart/master

Copyright
config.properties
Merge pull request #53 from DeOb/master

config.properties
Complete documentation (javadoc)
Fix config bug
Merge pull request #56 from DeOb/master

Documentation
Update src/de/kaffeeshare/server/datastore/Datastore.java
Update src/de/kaffeeshare/server/exception/SystemErrorException.java
Garbage collection cron
Merge remote-tracking branch 'origin/master'
Review results
Use backend for cron