1. Remove the ability to disable ad mref drop-down when it has less then
two elements.
2. Use or label instead of disabled button
Remove the mini css from the mref select buttons
1. Enhance style
2. Fix bug when one add-button is used the other are not working
properly.
3. Replace the add-button to the end of the statement.
4. Enhance the user filter labels (Adding brackets where its needed)