Add tickets for unrepresented features from the user drawings

[jgonggrijp]

I completed my own design, which was directly inspired on the user drawings, with #64. Some features that appear in those drawings, however, are not yet represented as issues.

Go one more time through all the drawings and create a ticket for each feature that wasn't already represented. Purpose: to have a complete overview of all features that have been requested, regardless of whether they will be implemented or not.