updated advanced search
Added exclude terms option to advanced search

fixes #654
Correctly parse urls with time related queries

fixes #654
Merge pull request #673 from ebensing/advsearchfix

Advanced Search refactoring & exclude terms
Merge pull request #686 from ebensing/advtime

Correctly parse urls with time related queries
text tweaks
Merge pull request #698 from nickkapur/varioussmallfixes

various text tweaks and localization fixes