filter+file association

[janwilmans]

Debugview++ can be used to filter logfiles, to make certain logfiles readable a lot of filters / highlighing can be required.

It would be nice if a shortcut could be created from a view that re-opens the same file with the same filters.

Possible implementation: a filename commandline option and a filter-file commandline option, if specified the result is a new view with the filters loaded from the specified filter-file.