Improve performance by removing some temporary objects
Fix some coding style issues
Add support for exiting formspecs by doubleclicking outside
Changed Time Out message from ERROR to INFO.

Changed Time Out message from ERROR to INFO.
Fix HUD not visible if below ground blacked out
Add AppData file
Fix AppData path for RUN_IN_PLACE, fixes #1365
Fix regression dirt texture not beeing default in non cloud menu
Fix regression main_menu_script setting not working any longer
Unite nodes shaders.
Pass drawtype and material type to shaders.
Move shaders generation to startup only.
Allow assign shaders per tile.
Initial code to support water surface shader.
Minor stability improvements in block emerge handling