Issue #1398676 by Heine, c31ck, giganget: strict warning only variables should be passed by reference.

Make term backgrounds wider.

Fix the issue by giving both the main and secondary menu min-height instead of fixed height.
Also adjusted how main menu links are styled so they look nice when wrapping to a second
line.
Secondary links use overflow auto. When there are too many links they will be hidden instead
of overlapping the header.

Consolidates how main and secondary links are rendered. Also uses the menu settings to render the
correct menus

Add specific rule for th a so that modules (like calendar) don't override and make things unreadable.