[changed] back to math.round for clutch
[improved] apppositioning: added marker to indicate the referencepoint for positioning. added referencepointchange on screenedges.
[improved] apppositioning: resizing the window has the desired effect (loading/saving position is broken and needs to be reimplemented to fit the new system)
[improved] apppositioning: added options -> loading works again (with the old system)
[improved] apppositioning: loading/saving works
[improved] apppositioning: replaced position with refpointoffset on first appspawn to make sure refpointoffset has a valid value
Merge remote-tracking branch 'remotes/upstream/master'