Added routes to edit event and handle edit event

Added in routes that redirect users to event page based on their
selection and to update the database based on inputs entered by the
users
Added in new link in view_selected_event.blade.php

Added in the new link for users to choose to edit this event
Added in edit_my_event.blade.php

Added in edit_my_event.blade.php to display past information from the
database with form model binding
Added in viewMyEvent() and editMyEvent() functions

Added in viewMyEvent() which displays all the information of the
selected event.

Added in editMyEvent() which allows users to change/update the
information of events and update them to the database.