Making the browse page functional without ui.json changes.

The task browse page will not load properly if the ui.json does
not contain the browse configuration section. Making it more fault
tolerant.

Needed to correct 18F/midas-open-opportunities#6 more permanently.
I believe this is related to #362

permissions issues running chef 2x
Merge pull request #370 from DavidEBest/devel-taskloading

Making the browse page functional without ui.json changes.
Merge pull request #371 from ultrasaurus/devel-permissions

make import as midas user (related to #362)