Solved Issue #23: Note date validation

Added a check for a follow up date greater that today's plus 180 days.
Displays a message to inform the user of the possible error.
Create custom initialization for note boundary

This change better organizes the code and also adds a event handler to
the mtxtNextFollowUp text change event.
Solved Issue #39: The word "display" is not clearing
Created custom initialization for the customer search screen

This function was added to better organize the code