Add support for multiple database adapters

removed mysql dependency from travis file and updated database_example.yml so that it uses sqlite instead of mysql for testing

Added some bug fixes that were a part of an old 'upgrade-bootstrap' branch but were missed when creating the rails-4-2 pull request. Also replaces the static page urls with localized versions

setup travis with mysql

Ran a rake db:migration:reset to get the API db changes in

Updated database.example.yml

DMPonline4 - RAILS 4.0 (#4) ...

Merging the initial DMPOnline4 codebase into Roadmap

DMPonline4, this code was designed and implemented by the Digital
Curation Centre (DCC)
DMPonline runs in Ruby 2.1 and Rails 4.0, there is a mysql database.