Fix PM overwrite bug.
Fix PM overwrite bug.

Fix bug where PM setting is overwritten when selecting an hour.
Previous behavior: set shortTime: true, then first select the PM button, then when selecting an hour it resets to AM.
Current behavior: set shortTime: true, then first select the PM button, then when selecting an hour it persists as PM.
miamarti/Material-DateTimePicker,miamarti/Material-DateTimePicker,T00rk/bootstrap-material-datetimepicker