Submit Overtime Hours Module

This module has been re-written in order to address the following:

1. System's inability to account for
   1. Overtime submissions that are of 24 hours duration
   2. The start time of a worked overtime same as an end time of an already submitted overtime (regardless of its approval state)
      Example:
      Submitted overtime
   3. Accurate determine if an overlap exist
      Example:
      Submitted overtime
2.  UI / UX improvements
   1.  Core third party libraries (i.e. jQuery & Bootstrap) have been updated to the latest versions
   2.  Removal of deprecated functions / calls
3.  Maintainability
   1.  Restructure of assets & resources
      1.  D-R-Y approach; all subsequent module overhaul will use the "Submit Overtime Hours" as a blueprint