Fix for single-string coverage.
Set default list_sets to not have limit.
Shred fixes

-Applied subject <br> shredding on all SCDL profiles.
-Applied isShownAt/format semicolon shredding on all profiles.
Removed doubled urls in profiles, something went wrong after someone's merging.
Created module to set/unset a prop.
added removing spatial after copying to dataProvider; added handling of the milt-valued dataProvider field
unit tests update
unit tests update
Merge branch 'master' into artstor

Conflicts:
	akara.conf
	test/server_support.py