Edit user groups

As administrator i want to be able to edit user groups
1. When cursor hovers usergroup row it becames highlighted (color is the same as for unread PM) and in the right side of "Name" cell pen icon appears
There is no edit icon for the following groups:

• Administartors;
• Banned Users;
• Registered Users.

2. After clicking on pen icon pop up window appears.
3. Pop up contains:

• "Group name" input - administrator can change group name (validation rules are the same as for adding new group):
  • 1..100 symbols;
  • should be unique;
  • can't be empty;
  • can't contain only space;
  • spaces at the begin and at the end are trimmed.
• "Group description" input - administrator can change group description (validation rules are the same as for adding new group):
  • 0..255 symbols;
  • can be empty;
  • can't contain only space;
  • spaces at the begin and at the end are trimmed.
• "Save" button - group is saved with entered name and description;
• "Cancel" button - no changes were saved, group has old name and description.

Localization:

Found bugs

Description	Link	Status
Unnecessary symbols in User Groups page header	link
XSS vulnerability in Edit group Description field	link
If Description field contains only spaces, they should be trimmed and field is saved as empty one.	link	separate issues JC-2364 and JC-2365 are created
CSS issues on User Groups page in Firefox	link	separate issue JC-2395 is created
HTML validation errors on User Groups page	-	separate issue JC-2394 is created
TAB doesn't move focus to Edit Group pop up window x button.	-	separate issue JC-2396 is created