Add jquery-ui custom css images.
	new file:   resources/css/images/ui-bg_diagonals-thick_0_666666_40x40.png
	new file:   resources/css/images/ui-bg_diagonals-thick_18_b81900_40x40.png
	new file:   resources/css/images/ui-bg_flat_10_000000_40x100.png
	new file:   resources/css/images/ui-bg_glass_0_e2f2f9_1x400.png
	new file:   resources/css/images/ui-bg_glass_0_ffffff_1x400.png
	new file:   resources/css/images/ui-bg_gloss-wave_0_e2f2f9_500x100.png
	new file:   resources/css/images/ui-bg_highlight-soft_100_ffffff_1x100.png
	new file:   resources/css/images/ui-bg_highlight-soft_75_1c94c4_1x100.png
	new file:   resources/css/images/ui-icons_005580_256x240.png
	new file:   resources/css/images/ui-icons_1c94c4_256x240.png
	new file:   resources/css/images/ui-icons_222222_256x240.png
	new file:   resources/css/images/ui-icons_ffd27a_256x240.png
	new file:   resources/css/images/ui-icons_ffffff_256x240.png
Update requirements.txt so pip install -U -r requirements.txt works.
	modified:   requirements.txt
Removed css reference that causes problems for django-pipeline.
	modified:   resources/css/application.css
Merge branch 'master' of github.com:iPlantCollaborativeOpenSource/atmosphere

Conflicts:
	requirements.txt