Removal of less and other various bugfixes (see following)

* Updated to Rails ~> 4.1.5 to work around a bug in Thor that was present in 4.0.x and get on latest release
* Switched from twitter-bootstrap-rails (dependent on less) to the official bootstrap port, bootstrap-sass
* Added bootstrap-sass-extras to restore the missing bootstrap_flash helper not present in bootstrap-sass
* Fixed naming of several of a couple canned stylesheets to their actual names in git
* Fixed order of db:create/db:migrate to ensure the db is created by time generators start running (i.e., devise), and then migrate again when done
* Added appropriate static assets to the assets initializer