Description of problem:
When user has eligible content in the left pane, but no actual selected template in the right pane, the Add links still exist, which can be confusing.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1.  Create a system template, "test system template".
2.  Add RH content provider
3.  Content Management > System templates > Red Hat Enterprise Linux Server > Red Hat Enterprise Linux Server Package Groups
4. Assure "test system template" appears in left pane, but do /not/ select it.
5. Select "Base System" from the package groups and hit +Add.... multiple times. 
  
Actual results:
Nothing happens - which makes sense, since no template has been selected. But maybe that Add should not be there /until/ a group is selected. 

Expected results:
Turn off "Add" until a template is actually selected.

Additional info:

It's particularly confusing given that if you only have one system template and see it listed in the right pane, one might think it's already been selected or something  - like it's a header. All in all, confusing.