Improvement to reset function and minor adjustments

[catmandx]

I've added these changes:

• Add reset button to manually reset tabs
• Resetting change tab color to black instead of grey
• Add exception handling to deal with tab group header
• Change orientation of button pane from vertical to horizontal

Old: Only tabs before groups are highlighted due to exception occuring at the group header (Group 1 label)

New: tabs inside and after groups are highlighted, leaner search bar