rails4 compatibility
Backwards compatibility with rails 3
Allow passing html_options to country_select_tag
move prompt above priority options

Change-Id: I33f72753105fa45af43cba78eb57e9b35912aabd
Add to_s to Rails.version

Due to rails/rails#8501.

Change-Id: I3a5580e12a9f4bc013bb98db9aa6d8c3e11bf0c5
Merge remote-tracking branch 'freerunningtechnologies/rails4'