Memory leak in color-blob-detection sample fixed;
Default face size in face-detection is set to 20%;
Error handling improved;
Some possible mat leak fixed;
Manager verison and engine interface version incremented to fix incompatibilities;
Docs updated;

Internal OpenCV library in OpenCV Manager support added;
Unit tests improved, platform specific tests added, MIPS related tests added;
Code refactoring done.

Some aditional logs added;
AndroidManifest version incremented.