Mouse function tweak

Now you can also use bindPressMove function with middle and right mouse
buttons
Added vardump function

Very useful for debugging
Changed MMB moving around the map

Finally :-)
Merge branch 'master' of https://github.com/Crypton33/forgottenmapeditor

* 'master' of https://github.com/Crypton33/forgottenmapeditor:
  Changed MMB moving around the map
  Added vardump function
  Mouse function tweak