Menu Function Update 5

-/+ Moved welcome message so only appears the first time
+ Added while loop so that main menu
+/- Edited the insert_menu entry phrase, due to a bracket in the wrong
place
## Commented out printing choice, as the lines were written for bug
testing
+ Added a menu for creating databases, to give an option to go back to
main menu, in case of accidental hits
+ Added an else option for any erroneous data