Closes #1057

* Use the recommended mipmap directory instead of drawable
* Remove outdated mkicons.sh script
* Add legacy icons for all densities
* Add monochrome version for Android 13+
* Deduplicate icon in fastlane folder

Version must be changed in:
- configure.ac
- src/windows/config.h
- android/jni/include/config.h
- android/build.gradle
- android/AndroidManifest.xml

The Android 4.x+ code has changed a lot since the initial import
of the eyes-free codebase. A lot of bug fixes and improvements
have been made to it.

The eyes-free codebase had two different code paths:
  *  one for ICS (4.0) or later, using the Java-based TTS APIs
     provided by the Android platform;
  *  one for pre-ICS using an internal C++-based TTS API.

Thus, any bug fixes or improvements would have to be done to both
code bases if Android 2.x/3.x support is required. This is not
maintainable.

If pre-ICS support is to be re-added in the future, the plan will
be to:
  *  forward the C++-based APIs to the Java-based APIs via a
     compatibility layer;
  *  use a compatibility layer (Android Support Library?) for using
     the ICS settings API on pre-ICS.

This reverts commit 433a0a0455.

The issue here appears to be that the process the eSpeak commands are
processed from to generate the speech differs from the one used to
modify the settings. This appears to be enough to cause it to not
get the updated settings until the process is restarted.

Thanks to Peter Vagner for locating the cause.

This reverts commit a79fe17681.

Conflicts:
	android/AndroidManifest.xml

This is the actual commit that causes the permission problems noted in
issue #31.

This reverts commit 85594a9e8d.

The commit this reverted was the wrong commit. Therefore, undo the revert.

This reverts commit 681f7475d3.

This commit is causing permission issues on a real device that is preventing
the service from loading (see issue #31).

This is to try and address the "java.lang.SecurityException: Not allowed to
bind to service Intent" error when using the spiel screen reader.