Merge pull request #46 from ehenneken/citation_helper_fix

bibutils unit test: removed get_citations test
The multiple inheritance causes problems for p2.7 - but it is not needed, as fixtures already depend on the unittest.TestCase
OK, better version, tested on python 2.6/7 - 2.6 needs multi-inheritance, but in different order
Fix for trac #480 - abstract needs trailing slash
Speeding up selenium tests and fix for adsabs-api#4
Merge pull request #47 from romanchyla/fix-wrong-highlights

Speeding up selenium tests and fix for adsabs-api#4
Removing qf for unfielded search - by default, let solr decide
Updated docs
Ticket 479: metrics on query
Metrics: no selection uses EXPORT_DEFAULT_ROWS bibcodes