Empty rows in Table are badly styles (#14112)

Reduced padding around widgets inside table cells also.

Set z-index for drag’n’drop styles to set the above any relative
positioned widgets inside table cells.

Change-Id: I512c61428aa88678261f276148d3ba39134a6411
Fix color picker button for IE8

The selected color hex value is no longer overlapping with the color
square.

But now when there’s no hex value as the button caption, there’s extra
white space on the right edge of the button, which is unavoidable. This
is a lesser evil.

Change-Id: I9c7e36fdf22f63c9cad6972f0f2038513f841d6b
Fix native select font color (Valo)

Change-Id: Ibeb5849417776847f40422ff1b9fb99c63d23af7
Notification delay is not set to 0 when the notification is clicked (#14368)

Reintroduce the delay timer which triggers the hiding of the
notification. When the notification is clicked, no timer is used, the
notification is hidden immediately.

Change-Id: I93ecc5dcc34c10092b85f4e0daf7ecacfef77f7a