EasyHack proposition - Crop image functionality improvement (fdo#34555)

[khagaroth]

Can some developer please look at
https://bugs.freedesktop.org/show_bug.cgi?id=34555 and check if it's
suitable to be filled as an EasyHack (and fill it if it is)? The
current crop functionality in Writer and Calc is really ridiculously
bad and source of many user complaints. All the needed functionality
is already present in Draw.