FIX: outputname and suffix checkbox behaviour. Now output
name column updates if suffix, prefix, format or allow rewrite are
changed.
Remove "safe" variable
Add: watermark function working
Fixed blur values
Fixed dimensions of tmp images
Added margin fro image and text.
Fixed image opacity and blending modes.
Add. Get sizes for output function
small check in getsizes from widget.

Even if resize is check, if there is no size selected there wont be
any resize.
Added convert caligra inkscape and gimp function
Moved parent/child checkboxes functions upper in the stack
ADD: Convert functionality