indicator for post autocompletion missing

[Robert Jäschke]

A feature of the form fields on the /editPublication page got lost in the transition to Bootstrap: In the old layout, a triangle showed if other users have entered other data for that field. This triangle (or another icon) should be added again.

Created from a comment in issue #2274.

[Sebastian Böttger]

resolves issue #2378.

→ <<cset 98adb6dba1e6>>

[Sebastian Böttger]

fixes #2378 for bibtex key

→ <<cset b27a379dd01b>>