Missing User Group model Necessary function

There was no removePermission function, and its very necessary when uninstalling a module.
list options by it's sort order
Merge pull request #695 from diego-vieira/patch-1

list options by it's sort order
removed some double spaces
Fixed FedEx API Error

FedEx API docs state that StateOrProvinceCode is "Required if Sender Country Code is US or CA.", but OpenCart was sending the full state/province name when not US, causing FedEx to respond with the error "The length of the destination state or province exceeds the limit of 2 characters." This issue is fixed by sending no StateOrProvinceCode when not in US/CA.
Merge pull request #1 from BeyondWEB/patch-1

Fixed FedEx API Error
changed the help text from bootstrap tooltips to help-block
Merge pull request #701 from BeyondWEB/master

Fixed FedEx API Error
Merge pull request #693 from fabiocarneiro/patch-1

Missing User Group model Necessary function
update to form buttons to use html5 submit
more button changes to use html5 id submits