Description of problem:
When one wants all of the packages within a group, they need to check if the
package is selected in each group with optional packages. It would make
selection or not selecting optional packages easier and quicker if this option
was added to the installer.

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


How reproducible:
Highlight the group, click on the optional packages button. Notice that there is
no way to select or not select the optional packages at once.

Steps to Reproduce:
1. select desired packages by clicking on individual checks
2. go to next group, back to selecting individual packages
3. finally select all desired packages (all optional)
4. proceed with installation
  
Actual results:
It took a lot of time to select all packages

Expected results:
A quicker selection process

Additional info:

This feature would benefit future installations for Fedora and RHEL when introduced.