Issue with submitApplication in adminViews

[uttamthummala]

1. The submitApplication endpoint in adminViews can malfunction if application_id's student_id is not matching with the student_id mentioned as it is not checking whether The given application belongs to the student_id entered or not .This could lead to editing others applications with given student's Resume etc
2. The Same endpoint if the application_id is not mentioned can create a new application for the student who already applied which will lead to multiple errors(There are Errors while trying to handle The errors )