initial use of ImageFields for original thumbnails
typo
move thumbnail_file field up into Source
create WidgetSettings through South's ORM, not Django's
new templates should refer to thumbnail_file, not thumbnail_path
don't crash if thumbnail_path is accessed w/o a file

It's weird code, but older templates might access this attribute.  Once we've
moved entirely to newer templates, this code could be removed.
migrate old paths to new ImageField
fix a couple typos of `thumbnail_file`
Merge branch 'develop' into ticket/18318

Conflicts:
	localtv/tests/functional/api_v1.py
keep the source_upload_paths short

If they're longer than 100 characters, we take a hash of the name and use that
instead.
bz19157. Submit button hidden when site settings dictate so.
merge 'release/1.9' into develop
Removed robots.txt
Merge branch 'release/1.9' into develop
Merge branch 'release/1.9' into develop
Merge branch 'release/1.9' into develop
Merge branch 'release/1.9' into develop
Merge branch 'master' into develop
bz19123. Initial switch to vidscraper 1.0.
Still need to run tests with internet on.
Further corrections to tests and code to use vidscraper 1.0.