Correct tolerance value for sanity checks with ERROR_RELATIVE

Use min/max bounds instead of local value to calculate acceptance threshold.
Threshold based on local values somethimes does not work because cancellation
of big values may produce error bigger than local value.
Suppress clang build warning
Temporary disable unstable Features2d_RotationInvariance_Detector_SIFT test
Increased time limits, eliminated extra params
Fixed multiple issues in docs (bug #2410)
Modify decode_tile16384x16384 test to not fail when available memory is not enough for test
Merge pull request #391 from taka-no-me:fix_buildbot_issues
Merge pull request #393 from Daniil-Osokin:bugfix_doc_multi_issues
Merge pull request #394 from taka-no-me:fix_tiff_test
Merge pull request #318 from AnnaKogan8:fixed-perf-tests
Merge pull request #390 from taka-no-me:fix_relative_error_check