HIPPOTHEME-15: Style hippo pane heading & footer
HIPPOTHEME-15: dropdown media list styling
HIPPOTHEME-15: add hippo-pane-text styling
HIPPOTHEME-15: add border to navbar navs
HIPPOTHEME-15: dropup should have same styling as dropdown
HIPPOTHEME-15: prevent scrollbars in IE10
HIPPOTHEME-15: allow overflow for hippo pane body