Mol 70 search tooltips and modal

[mev1482]

Description

Adding tooltips to the labels/buttons in the search box. Adding a Modal to search box, that will display info helpful for its use.

Checklist

• [X] Code compiles correctly
• [x] Created tests which fail without the change (if possible)
• [X] All tests passing
• [X] Extended the README / documentation, if necessary