Multiple fixes for role commands

- Fix server being 'Guest' for commands
- Make autocomplete of arguments more intuitive
- Fix usage text for commands

exp_commands/module/locale/en.cfg

@@ -1,5 +1,6 @@
 [exp-commands]
 help=__1__- __2____3__
+usage=/__1__ __2__
 aliases=\n  Aliaies: __1__
 argument=<__1__> 
 optional=[__1__] 
@@ -10,7 +11,7 @@ error=Command failed to run: __1__
 error-default=Please check you gave the correct arguments.
 unauthorized=Unauthorized: __1__
 unauthorized-default=Access is denied due to insufficient permissions.
-invalid-usage=Wrong number of arguments, usage: /__1__ __2__
+invalid-usage=Wrong number of arguments, usage: __1__
 invalid-input=Invalid input: Please ensure everything is formated correctly.
 invalid-argument=Invalid argument "__1__"; __2__
 internal-error=Internal Error, Please contact an admin: __1__