Iconfont icons are of no value to screenreader users; in our case,
they get alternative text. By adding 'aria-hidden="true"' to the
<span> holding the iconfont icon, we avoid the screenreader trying
to announce the iconfont icon.
Positioning of the info text was not ideal because it could be
placed way below the associated label if the associated config
element was larger than expected.
References #190
Partial manual revert of 168cb146eaec3c568527bbc5dcf06b4cb6e9bda8.
Please note that this does *not* contain any changes to the UI as
discussed; those will follow later.
References #41
This includes only the icons actually used or intended to be used
in the backend. Please note that unfortunately, some class names
have changed. Also some icons have been exchanged.
