made tag search dive into contact tags.
prefetched tags.
Duplicates no longer shown if contacts share tags not shared by partner.
filter_partners consistently returns lists now
comments and pep8
Un-debug-toolbar-ified settings.
Was getting all tags for all partners instead of each partner.
pep 8
updated unit test to account for change in filter_partnrs API.
Merge branch 'master' into pd-699

Conflicts:
	mypartners/views.py
Merge pull request #956 from DirectEmployers/pd-699

[PD-699] made tag search dive into contact tags.