use Snap / Snap (Pixels) now save to scene file

Previously, only Use Pixel Snap would save to the scene.
Tested and working for me, on Linux.
added missing include for imagemap
Merge pull request #325 from adolson/input_map_missing_header

added missing include for imagemap
#298 imp
Merge pull request #330 from jonyrock/complex_undo

#298 imp - thanks!!! - hope you tested this well :)
Merge pull request #318 from adolson/scene-snap-settings-save

2D scene snap settings save
-Added OpenSSL and HTTPS support
-Built-in version of the library for Windows, Android and iOS (other OSs use system one)
-Small fixes all around
Merge branch 'master' into develop

Conflicts:
	platform/android/.old/detect.py
	platform/windows/detect.py