Moved firing the syncHeights plugin to a seperate function in the
serendipity namespace because it needs to be fire onclick for the
plugin tabs here. Probably gives us more flexibility in the future
as well. New function is serendipity.sync_heights() which takes no
args.
References #223
Also hide noscript controls for plugin manager differently, but show
them on no-js and touch devices. This is supposed to compensate the
fact that the dragdrop JS does not work on touch devices. Might need
a better solution long-term here.
Partial manual revert of 168cb146ea.
Please note that this does *not* contain any changes to the UI as
discussed; those will follow later.
References #41
