replace gif with png
load elegance sheet last

prevents customcss settings from being overwritten
fix 100% width breaking BS grid

Fix for issue #15. Forcing 100% width on #region-main broke the grid and pushed the block region below the content region.
Merge pull request #21 from thedannywahl/clean_moodle_logo

replace moodlelogo gif with png
Merge pull request #22 from thedannywahl/call_elegance_sheet_last

load elegance sheet last
Merge pull request #23 from thedannywahl/issue15_coursecategory_width

fix 100% width breaking BS grid
fix login button styling