Timeslot // Watermarks // Changed Module Path

This pull request contains three major parts reflected in each commit.

aa27713 - This commit adds the functionality of assigning timeslots upon the user confirming his/her registration through email.

d9d1ff1 - This commit adds watermarks to help user's enter their contact number in the format we want. 

64b71ce - This commit is a major modification of the projects module name to reflect the change from my personal repository to the organization's repository. IntelliJ's code inspection indicates that the move is successful and the cursory testing I did agrees. However, there *might* be some unexpected bugs due to this move.