added migration script for the topic model
updated the fabfile and requirements
files needed for GSAA design
initial gsaa styling
updated sidebar nav styles
Merge remote-tracking branch 'origin/gsaa-style' into gsaa-style
Merge remote-tracking branch 'origin/gsaa-style' into topic-maps-and-catalog
working some styles into the catalog.  adding a placeholder for the data priorities page.
Merge remote-tracking branch 'origin/gsaa-style' into topic-maps-and-catalog
Merge remote-tracking branch 'origin/topic-maps-and-catalog' into topic-maps-and-catalog
Used the new logo.
Adjusted the button width for the Data layer buttons on the visualize page.
Use new logo
Merge remote-tracking branch 'origin/topic-maps-and-catalog' into topic-maps-and-catalog