UML source files added

misc and pics folders removed

Modified doc to achieve the automatic generation of UML diagrams with plantuml

Removed debug prints in TLD Tracker

Added perf test for TLD tracker

Added test OPE-SRE-TRE for TLD tracker

Fix tab in tracking.rst

Fixed builder warning

Fixed warnings
Merge pull request #109 from lenlen/tld_test_and_doc_update

Tracking API doc update and test-perftest TLD tracker