Fixed height of logger view.
Force grep to process files as text.

Fixes message "Binary file (standard input) matches" when log file
contains NUL character.
Merge pull request #6 from michaellopez/grep-force-text

Force grep to process files as text.
Merge pull request #5 from michaellopez/logger-height

Fix height of logger view.
Improved display of file size in dropdown.