by default, set extruder to absolute mode
Add "Reload platform" to refresh all the objects on the platform from their files
Merge pull request #1 from daid/SteamEngine

Update on 140129
Add version 0.1 of serial communication with printerConnection.
Improve serial autodetection.
Improve serial communication.
For now prevent UltiGCode from using connectionManager.
Add more documentation...
Add more documentation, fix commandline slicing.
Add some more documentation. And the zhop feature.
Rename opengl to openglHelpers to better tell what it does.
Added comments
Removed old functions
Fix the wildcard filters for loading.
Fix the exception when there is no engine result and one opens the layer view.
Removed old code
Merge branch 'SteamEngine' of https://github.com/daid/Cura into SteamEngine
added todo coment
added comments
Fixed close button about window for linux