refactor(email-submission/controller): refactored email submission (#…

…1594)

* refactor(email-submission/controller): refactored email submission to be chained

* refactor(email-submission/controller): refactored controller to use new methods

* refactor(spcp.util): removed unused methods

* fix(email-submission): fixed bug caused by rebasing off develop

* refactor(email-submission): add new type and refactored email submission controller to use type

* refactor(email-submission): removed logging utility method

* refactor(email-submission): add explicit type annotation for clarity

* refactor(email-submission/util): adds default argument to email submission object

* docs(email-submission): added docs for not clearing of cookies in error case for submission

* docs(email-submission/controller): fixed typo