Android support (#299)

* AI libs registering shenanigans on android;
* Fixed resolution aspect + mouse event scaling;
* Proper server init/deinit (through android IPC);
Enabled threaded init in CMT;
* Prevented a deadlock in logger on some devices;
* Fixed frozen intro frame after interrupting the video;
Added android progressbar displaying during initial data loading;
* Hacky fix for choppy animations during heroes movement (should look better now, but it's definitely not a good solution);
* Changes/fixes for new android launcher building process;
* Fixed app hang after getting SDL_QUIT when activity was destroyed;
* Functioanal, configurable advmap swiping support;
* VCMI changes cleanup;
Added few missing VCMI_ANDROID guards on swipe mechanics;
* Removed unneeded sleep in server startup code for android;
* Removed android ioapi hack (fixed in newest ndk);
* Removed unused android's library loading logic;
* Added android's swipe option to settings schema;
* Moved NO_STD_TOSTRING to be defined in global.h instead of build files;

include/vstd/CLoggerBase.h

@@ -38,7 +38,11 @@ namespace ELogLevel
 			case ERROR:
 				return "error";
 			default:
+#ifdef NO_STD_TOSTRING
+				return "invalid";
+#else
 				return std::string("invalid (") + std::to_string(level) + ")";
+#endif
 		}
 	}
 }