Improve AOSP Download/Upload animation

This increases the number of png required for a full download/upload animation cycle.
These new png makes the animations much smoother.

Change-Id: I7120d757782e797809bc97747127c6a0cc36f2fe

Conflicts:
	core/res/res/drawable-hdpi/stat_sys_download_anim0.png
	core/res/res/drawable-hdpi/stat_sys_download_anim1.png
	core/res/res/drawable-hdpi/stat_sys_download_anim10.png
	core/res/res/drawable-hdpi/stat_sys_download_anim11.png
	core/res/res/drawable-hdpi/stat_sys_download_anim12.png
	core/res/res/drawable-hdpi/stat_sys_download_anim13.png
	core/res/res/drawable-hdpi/stat_sys_download_anim14.png
	core/res/res/drawable-hdpi/stat_sys_download_anim15.png
	core/res/res/drawable-hdpi/stat_sys_download_anim16.png
	core/res/res/drawable-hdpi/stat_sys_download_anim17.png
	core/res/res/drawable-hdpi/stat_sys_download_anim18.png
	core/res/res/drawable-hdpi/stat_sys_download_anim2.png
	core/res/res/drawable-hdpi/stat_sys_download_anim3.png
	core/res/res/drawable-hdpi/stat_sys_download_anim4.png
	core/res/res/drawable-hdpi/stat_sys_download_anim5.png
	core/res/res/drawable-hdpi/stat_sys_download_anim6.png
	core/res/res/drawable-hdpi/stat_sys_download_anim7.png
	core/res/res/drawable-hdpi/stat_sys_download_anim8.png
	core/res/res/drawable-hdpi/stat_sys_download_anim9.png
	core/res/res/drawable-hdpi/stat_sys_upload_anim0.png
	core/res/res/drawable-hdpi/stat_sys_upload_anim1.png
	core/res/res/drawable-hdpi/stat_sys_upload_anim10.png
	core/res/res/drawable-hdpi/stat_sys_upload_anim11.png
	core/res/res/drawable-hdpi/stat_sys_upload_anim12.png
	core/res/res/drawable-hdpi/stat_sys_upload_anim13.png
	core/res/res/drawable-hdpi/stat_sys_upload_anim14.png
	core/res/res/drawable-hdpi/stat_sys_upload_anim15.png
	core/res/res/drawable-hdpi/stat_sys_upload_anim16.png
	core/res/res/drawable-hdpi/stat_sys_upload_anim17.png
	core/res/res/drawable-hdpi/stat_sys_upload_anim18.png
	core/res/res/drawable-hdpi/stat_sys_upload_anim2.png
	core/res/res/drawable-hdpi/stat_sys_upload_anim3.png
	core/res/res/drawable-hdpi/stat_sys_upload_anim4.png
	core/res/res/drawable-hdpi/stat_sys_upload_anim5.png
	core/res/res/drawable-hdpi/stat_sys_upload_anim6.png
	core/res/res/drawable-hdpi/stat_sys_upload_anim7.png
	core/res/res/drawable-hdpi/stat_sys_upload_anim8.png
	core/res/res/drawable-hdpi/stat_sys_upload_anim9.png
	core/res/res/drawable-xhdpi/stat_sys_download_anim0.png
	core/res/res/drawable-xhdpi/stat_sys_download_anim1.png
	core/res/res/drawable-xhdpi/stat_sys_download_anim10.png
	core/res/res/drawable-xhdpi/stat_sys_download_anim11.png
	core/res/res/drawable-xhdpi/stat_sys_download_anim12.png
	core/res/res/drawable-xhdpi/stat_sys_download_anim13.png
	core/res/res/drawable-xhdpi/stat_sys_download_anim14.png
	core/res/res/drawable-xhdpi/stat_sys_download_anim15.png
	core/res/res/drawable-xhdpi/stat_sys_download_anim16.png
	core/res/res/drawable-xhdpi/stat_sys_download_anim17.png
	core/res/res/drawable-xhdpi/stat_sys_download_anim18.png
	core/res/res/drawable-xhdpi/stat_sys_download_anim2.png
	core/res/res/drawable-xhdpi/stat_sys_download_anim3.png
	core/res/res/drawable-xhdpi/stat_sys_download_anim4.png
	core/res/res/drawable-xhdpi/stat_sys_download_anim5.png
	core/res/res/drawable-xhdpi/stat_sys_download_anim6.png
	core/res/res/drawable-xhdpi/stat_sys_download_anim7.png
	core/res/res/drawable-xhdpi/stat_sys_download_anim8.png
	core/res/res/drawable-xhdpi/stat_sys_download_anim9.png
	core/res/res/drawable-xhdpi/stat_sys_upload_anim0.png
	core/res/res/drawable-xhdpi/stat_sys_upload_anim1.png
	core/res/res/drawable-xhdpi/stat_sys_upload_anim10.png
	core/res/res/drawable-xhdpi/stat_sys_upload_anim11.png
	core/res/res/drawable-xhdpi/stat_sys_upload_anim12.png
	core/res/res/drawable-xhdpi/stat_sys_upload_anim13.png
	core/res/res/drawable-xhdpi/stat_sys_upload_anim14.png
	core/res/res/drawable-xhdpi/stat_sys_upload_anim15.png
	core/res/res/drawable-xhdpi/stat_sys_upload_anim16.png
	core/res/res/drawable-xhdpi/stat_sys_upload_anim17.png
	core/res/res/drawable-xhdpi/stat_sys_upload_anim18.png
	core/res/res/drawable-xhdpi/stat_sys_upload_anim2.png
	core/res/res/drawable-xhdpi/stat_sys_upload_anim3.png
	core/res/res/drawable-xhdpi/stat_sys_upload_anim4.png
	core/res/res/drawable-xhdpi/stat_sys_upload_anim5.png
	core/res/res/drawable-xhdpi/stat_sys_upload_anim6.png
	core/res/res/drawable-xhdpi/stat_sys_upload_anim7.png
	core/res/res/drawable-xhdpi/stat_sys_upload_anim8.png
	core/res/res/drawable-xhdpi/stat_sys_upload_anim9.png
	core/res/res/drawable/stat_sys_download.xml
	core/res/res/drawable/stat_sys_upload.xml