Tweaked title cleaning check to skip titles that just end up with whitespace

Main code rev. 1841
Added search by contract_end

Main code rev. 1842
Whitespace cleanup

Main code rev. 1843
Added contract_end to search screen. Fixed issue with Ext datefields not working right in some browsers

Main code rev. 1844
Add Before/After searching for contract end date

Main code rev. 1845