Count number of files scanned and number of files displayed

This will latyer be used to display the numbers of files scanned and also to warn the user that no results have been found.
Move symlink detection to separate function

Code is more readable that way.
If line is a folder, skip it
Warn that no conffile has been found

Prviously only displayed an obscure error message
Display search status and file count in the top right

The rolling wheel style might be changed later on
Fix is_file function