Tracy dependency

[MImran2002]

Issue number: #533

Issue Description: Now that we have an update script that runs frequently, we don't need to check the external tracy database during regular application usage. We should remove the dependency and just use the data that we have locally.
There should be a sanity check, though, to make sure there aren't valid reasons to be checking with Tracy outside of the update script.

Tracy Codes Changed:

• App> login_manager> require_login(): user
• App> logic> adminManagement.py> searchForAdmin(): tracyStudents > databaseStudents; tracySupervisors > databaseSupervisors
• App> controllers> main_routes> laborStatusForm.py> laborStatusForm: students, terms, staffs, departments
• App> controller> main_routes> laborStatusForm.py > userInsert: students, supervisor
• App> controller> main_routes> laborStatusForm.py > getPositions: positions
• App> controller> main_routes> laborStatusForm.py > releaseAndRehire: student, supervisor
• App> logic> allPendingForms.py> overrideOriginalStatusFormOnAdjustmentFormApproval(): position
• App> logic> allPendingForms.py> modal_approval_and_denial_data(): position
• App> logic> allPendingForms.py> checkAdjustment(): newPosition
• App> logic> emailHandler.py> init(): newSupervisor, currentPosition, newPosition
• App> controller> main_routes> search.py> search(): current_students, current_students
• App> controllers> main_routes> laborHistory.py> populateModal(): newPosition, oldPosition
• Moved functions in app> logic> departmentPositions.py> updatePositionRecords() to userInsertFunctions.py

Tracy Codes Not Changed:

• App> controllers> main_routes> alterLSF.py> alterLSF(): oldSupervisors (Because there is a sanity chewck)
• App> login_manager> auth_user(): student, supervisors because of shibboleth
• App> logic> adminManagement.py> getuser(): student, supervisor and usertype because there is a sanity check on whether user exist in the database
• App> logic> allPendingForms.py> overrideOriginalStatusFormOnAdjustmentFormApproval(): tracyuser is kept because there is a sanity check on user in database
• App> logic> allPendingForms.py> checkAdjustment(): newSupervisor because there is a sanity check

TestCase added for (These test are created because getting position have complex peewee in it):

• App> controllers> main_routes> alterLSF.py> alterLSF()
• App> controllers> main_routes> alterLSF.py> fetchPositions:
• App> logic> alterLSF.py> modifyLSF():
• App> controller> main_routes> laborStatusForm.py > getPositions:

Codes changed:
All of the code changed are through replacing Tracy functions and Tracy calls with Peewee calls

UI Testing:

• App> login_manager> require_login(): print the user in the terminal and click log out in the UI to test
• App> logic> adminManagement.py> searchForAdmin(): Go to Sidebar > Administration > manage Administrators > Labor Administrator click the drop down and admins should be populated when you search (The same with SAAS and Fin Aid Admin)
• App> controllers> main_routes> laborStatusForm.py> laborStatusForm:
  Go to the sidebar > New Labor Status Form > Select either Supervisor, Department, Terms and Students (You might need to create a term in administration> manage terms to create LSF form)
• App> controller> main_routes> laborStatusForm.py > userInsert:
  Go to the sidebar > New Labor Status Form > Create a labor Status Form > Add Student > Review > A modal pop up > Click Submit (You might need to create a term in administration> manage terms to create LSF form)
• App> controller> main_routes> laborStatusForm.py > getPositions: Go to the sidebar > New Labor Status Form > Create a labor Status Form > Select Position (WLS) to see if its working (You might need to create a term in administration> manage terms to create LSF form)
• App> controller> main_routes> laborStatusForm.py > releaseAndRehire: