replaced Circumflex with Slick for database interaction; refined services interfaces for frontend
merge with frontend
Merge branch 'master' of https://github.com/neradis/index-vivus

Conflicts:
	frontend/.gitignore
Merge remote-tracking branch 'origin/master'
merge with master
database definitions and table-to-object-mapping for abbreviations
database definitions for abbreviation occurences per dictionary entry
fixed generic for duplicateList in ICrudOps
merge in new persistence classes from master
This is a small commit to demonstrate that accessing out Java services from the rails app
is indeed possible with the build configuration introduced in 50bc4c79e121d90ef3c5fa8b9e43b183827aaf1b.

(There was a bit of confusions, since the classpath entries for the backend do not appear in the JRuby
$CLASSPATH variable. They are accessible nonetheless.)
Additions to the JRuby classpath now deferred to the boot process of the
Rails application.
Merged AjaJavaController into AjaxController. Frontpage view is now using the language enumeration.