Fixed issues with saving RPC service changes

- Fixed double submission problem
- Fixed URI creation problem (had a '+ +' in the URI creation code, resulting in
  module name being sent as "NaN")
- Made a toggleSelection _service_ to share between the REST and RPC
  controllers, as the latter was not defining it, leading to the fact that HTTP
  methods could not be updated.
- Removed IDs and NAMEs from all HTTP method checkboxes to prevent collisions
  when multiple forms are inspected.
Merge branch 'hotfix/ui-rpc-save'

Fixed UI/application issues with updating RPC services.