Graphic appearance of help (question mark) bubbles

[daniel-jettka]

many of the bubbles look odd
it's an app-wide problem, e.g. for an impression:

Proposed solution/s:
(a) replace by an image
(b) find out where and how to revise HTML/CSS for them

[daniel-jettka]

Okay, this seems to have been fixed with another issue/PR