Update dates in license file

Well, two years later now! :)
Updated hyperlinks to link to GitHub pages
Update dates also in the about file
Merge pull request #63 from mrtnptrs/master

Update some hyperlinks and dates
Update submodule to point to new repo
Fix submodule branch
Use https for submodules
Merge remote-tracking branch 'origin/beta'
Use Gradle 1.10
Use gradle 0.8 plugin
Travis - use new Android build tools
Only load immersion SDK if enabled in settings
Update Google libraries
Use the libmikmod from SDL_Mixer
Revert "Use LuaJIT"

This reverts commit bf383ce6224b27119e2a1c06b03684f2c56d8e40.

Conflicts:
	jni/src
	src/Java/uk/co/armedpineapple/cth/SDLActivity.java
Merge branch 'immersion_fix' into beta