added request parameter and missing parameter exception
added use statement
added exception message
added phpdoc
added test for traits
corrected doc header
added wrong data type exception
added wrong datatype test
Merge pull request #86 from sulu-cmf/feature/request-parameter

Added request parameter and missing parameter exception
changed way to perform searches; only search on numeric fields if search is numeric, else just search on text fields
cleanups
Merge pull request #90 from sulu-cmf/bugfix/postgres-like

Bugfix/postgres-like
Merge branch 'develop' of git://github.com/sulu-cmf/sulu into feature/cache-expiration