Add basic OHSU styling

[little9]

This commit adds OHSU colors, fonts, and the favicon. A view override from Hyrax 2.0.0 is included to change the logo.

The variables sass file overrides Bootstrap 3 SASS variables.

Closes #231

[coveralls]

Coverage decreased (-0.7%) to 95.588% when pulling f8d7a087d9cdcac48a61405fd05528c7a161acbb on style/basic-branding into f4c86d4758963d3a5cb9cf5414d21fee5cf78129 on master.

[coveralls]

Coverage decreased (-0.7%) to 95.588% when pulling 6c205dd303dadf525e64bfe946788f700c0ba296 on style/basic-branding into f4c86d4758963d3a5cb9cf5414d21fee5cf78129 on master.

[coveralls]

Coverage decreased (-0.7%) to 95.588% when pulling 2a63d864e78c56f6c897e6c53ca41815abc27aa6 on style/basic-branding into f4c86d4758963d3a5cb9cf5414d21fee5cf78129 on master.

[coveralls]

Coverage remained the same at 96.324% when pulling ff9fee86def8970f1881d0151a476889807f0c12 on style/basic-branding into 3f5164a64b82359a89304c01eccc47914f50a0a3 on master.

[coveralls]

Coverage remained the same at 98.482% when pulling d759d877e6636756a1387d04200771d23360419f on style/basic-branding into d1b2949a1c9fa3c45e47857497138cce4e2fe305 on master.

[coveralls]

Coverage remained the same at 98.482% when pulling 867c4539d46fdbc3d27f37a381b809d1b1ba0ecb on style/basic-branding into d1b2949a1c9fa3c45e47857497138cce4e2fe305 on master.

[coveralls]

Coverage decreased (-0.3%) to 98.145% when pulling 867c4539d46fdbc3d27f37a381b809d1b1ba0ecb on style/basic-branding into d1b2949a1c9fa3c45e47857497138cce4e2fe305 on master.

[coveralls]

Coverage remained the same at 98.482% when pulling cb4a212c6d3902168475a12197a522b9b14acad0 on style/basic-branding into d1b2949a1c9fa3c45e47857497138cce4e2fe305 on master.