The log entry viewer should only highlight the currently selected match

[Kittyfisto]

Current behaviour

When a single line contains multiple matches, then all matches of that line are highlighted, even though internally, only one of the matches is selected.

Expected behaviour

Only the selected match should be highlighted, other matches in the same line should visually appear like all those matches in other lines.

Steps to reproduce the problem

1. Open a non empty log file with at least two filled lines
2. Search for a small (for example single character) string via Ctrl+F
3. Visually locate a line with multiple matches
4. Advance the search via the arrow down button or F3 to that line

All matches in that line will be marked in orange even though Tailviewer has only arrived at the first match of that line.
Going to the next match (which is in the same line) will not cause any visual change.

See the following screenshot: