Parse all querystring parameters
Pass all query parameters to performSearch
Sort search result using a proerty and a direction
Add links in column headers
Code cleanup

- removed scoring (unused)
- improve search matching
- cleanup comparators
- cleanup test code
Add testing around parameter normalisation
Feature tests for sorted serach results
Merge branch 'master' into sort-search-results

Conflicts:
	assets/javascripts/search.js
Semicolons ( The joy of javascript... :/ )
Replace triangle characters with entity references
Fix sorting on long arrays.

The old version used two iterations with two different comparators, an
approach that works only on arrays with a low number of elements. Like
the ones we use in tests...
Merge pull request #80 from alphagov/sort-search-results

Sort search results