Updated structure of the stylesheets

- Added bootstrap3 stylesheet to hold all bootstrap related styles.
- main.css.less only holds custom styles now.
Got LESS loading correctly from different files

- Created bonnie.css.less which loads in all of the other less files so
  now we can separate styles by function and/or page.
- Changed application.css to only require bonnie.css.less
- All other .css.less files are now only .less extensions
- Removed unused imports from less files
Finished restructuring the LESS code.

- Eliminated need for bonnie.css.less.
- Split apart bootstrap3.less to meet new standards.
- Unused files.
- Renamed main.less to measures.less to follow naming conventions used
  elsewhere in the app.