pep8 white space
basic setup for suite-media
Merge branch 'master' into suite-media
oops, fixing last commit
fix the multimedia reference issues in media suite
Merge branch 'master' into suite-media

Conflicts:
	corehq/apps/hqmedia/urls.py
fix media suite id
Merge branch 'master' into suite-media
allow group of columns in BasicTabluarReport
remove unused import
exclude report notifications by default from copy_domain
use default arg
add app id to validation cache (for builds not to conflict with the working app!)
Merge branch 'master' into suite-media

Conflicts:
	corehq/apps/hqmedia/urls.py
fix for mp3 files
Merge pull request #895 from dimagi/multimedia-audio

hotfix for mp3 files
Merge pull request #882 from dimagi/report_column_grouping

Report column grouping
use mimetypes
Merge pull request #896 from dimagi/multimedia-audio

use mimetypes
stop filtering out empty translation strings (e.g. causes crash for unlabeled detail column)