Untoggle buttons when switching views.

Previously when toggling between views which ever interactions controls where
toggled where still toggled but not displayed when switching. For now I'm just
going to untoggle. A better fix is to display the selected interactions.
Fix motif clicking.

Before, clicking on a motif did not update the jmol display. Now it does show
the motif.
Clean up button element.

Just move the button text to a new line making it easier for me to read.
Add spacing below the mode toggles.

Mode toggles were right on top of the viewer. I've added a little spacing to
make things a bit cleaner looking.
Make sequence control a <button>

Fixes problem where sequence control did not toggle to clicked state.