Asset tags admin portlet has javascript error if the user doesn't have the "Permissions" permission

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.1.1 CE GA2, 6.1.20 EE GA2
• Fix Version/s: 6.1.30 EE GA3, 6.2.0 CE M2
• Component/s: Legacy, Legacy > Control Panel menu, ~ [Archived] Frontend Infrastructure
• Labels:
  • Javascript
  • QA-R
  • QA-TP
  • categories
• Environment: Tomcat, Linux, MySQL
• Branch Version/s:
  6.1.x
• Backported to Branch:
  Committed
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/7502

When a user isn't have the permission of permissions proceed to enter in the tags admin portlet, the javascript fails due it make reference to a button that doesn't exists (The permissions button)

Steps to reproduce:

Create an organization orgtag with a site linked to it
Create an user inside orgtag called orguser
Create a role tagger
Define the permissions to the tagger role. This permissions are specified in the attachement tagger_permissions.png but they are basically all the permissions of the tag modules and the posibility of view the site in the control panel
Set the tagger role to orguser user
Log with orguser
Enter in control panel -> sites -> orgtag and go to tags section. Open the firebug/chrome developer console and see the error:

TypeError: tagsPermissionsButton is null