Targeted line in action must be highlight with a yellow background

[slemeur]

When we are using the action to point a particular line in a source code file, the line is difficult to catch.
We need to investigate, if it is possible to highlight the line with a yellow background.

Alternative -> We could highlight or put a visual indicator in the editor gutter (on the line number)

[tolusha]

upstream issue eclipse-che/che#6333