Added 'Num of tests' col, changed headers, added 'overall time' row
Switched time from seconds to minutes
fixing test failure on some systems
Merge pull request #304 from apavlenko:test_java_fix_double
4 digit library version numeration implemented in OpenCV Manager

Code refactoring done.
OpenCV library version type changed to int.
Some UI labels updated.
OpenCV Manager verison incremented.
Consistently use 4-digit library version
Add opencv_cheatsheet.pdf to documentation build and silence Latex output
Merge pull request #309 from asmorkalov:android_manager_4number_version
Merge pull request #310 from taka-no-me:4digit_version
Merge pull request #312 from taka-no-me:cheatsheet
changed diagnostic from "warning" to "note" in the python wrapper generator, to suppress some noise in opencv utilities
Merge pull request #314 from vpisarev:2.4
Merge pull request #306 from AnnaKogan8:perf_tests_timing.py-improvement