Added Reference to the entity "project"
Added the text field "reference" to the add Project Screen

And added the text field to the Internal Lecturer Privileges
Clearing the text field "reference" when clicking clear
Added access to the text field "reference" in the update project screen for internal lecturer
Merge branch 'master' of https://github.com/afridental/Projects.Team9
Added the text field "reference" to the Update Project screen
Added a reference to the project mapping