Merge pull request #44 from tarunbhardwaj/develop

Changed endicia_mailclass to selection field in view
Disable `carrier cost computation`(default behaviour)

Disable `carrier cost computation`(default behaviour) as cost
should only be computed after updating mailclass else
error may occur, with improper mailclass.
Merge pull request #48 from tarunbhardwaj/fix_calculation

Disable `carrier cost computation`(default behaviour)
Provision to change default display name of endicia service #5852
Merge pull request #47 from GauravButola/feature/task-5852

Provision to change default display name of endicia service #5852
Provision to have custom name for mailclasses