Transparent background in buttons and clock

[stefonarch]

Fixes the rest of #100

Removed also the redundant line in Valendas and another fix in this theme.
Didn't touch taskbar and desktop switch buttons, in some themes transparent panel is a little bit ugly.
Testing I noticed that desktop switcher with Leech doesn't highlight active one.

[stefonarch]

Testing I noticed that desktop switcher with Leech doesn't highlight active one.

Found #FancyMenu QScrollBar::handlehover, { the " , " disabled all below. A search didn't find other .qss files with the same error.

[tsujan]

Yes, an incorrect syntax can do that.

[tsujan]

Moreover, by handlehover, probably handle:hover was meant — handlehover doesn't exist.

[tsujan]

I read it four times and didn't find any issue. So, unless CSS has fooled me, GTM ;)

[stefonarch]

Thanks!