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()

assigned to @ldam

changed title from fix bug calculate find_tps_tm when the end time is the exact end of a day to fix bug calculate find_tps_tm when the end time fall into the last 5 minute of a day

added 3 commits

• e5e4d776 - handling_data.py: change name of each_day_5_min_list to be more descriptive;...
• b17d3ea5 - time_power_squared_dialog.py, time_poser_squared_processor.py,...
• 21b9a0f1 - add unittests for get_start_5mins_of_diff_days, find_tps_tm_idx

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changed the description

changed the description

requested review from @kienle

merged

mentioned in commit 6202d7f5

mentioned in commit 85c36c67