fix bug calculate find_tps_tm when the end time fall into the last 5 minute of a day

closes #81 (closed)

Logic changes are only at the end of handling_data.py find_tps_tm_idx() to handle the case that x_idx is None.

Other changes are variables and functions name to be more descriptive and unittests are added to test the 2 functions involve in tps calculating: get_start_5mins_of_diff_days() and find_tps_tm_idx()

approved this merge request

assigned to @ldam

@ldam I accidentally merged your old merge request instead of approving it. I reverted the merge and created this merge request to replace it.

added 16 commits

• 21b9a0f1...85c36c67 - 15 commits from branch master
• fe8a1172 - Merge branch 'master' into i81_tps_second_marker

Compare with previous version

merged

mentioned in commit 49657765