minor html tag cleanup
initial restructuring
add some edit buttons for tables 2,3
make separate tables
fix forms, and use class="form" instead of id, since there are multiple
add brief text description for each form table
improve table descriptions, and omit empty tables for Manual/Banned groups
don't show each user in tables 2 & 3
Show users in groups, and mention empty groups
Merge pull request #4 from edquist/gums-1.4

Spruce up the "Ban Users" UI on GUMS 1.4.0 (SOFTWARE-1655)