[Bugfix:TAGrading] grade inquiry per component visualization (Submitt…

…y#4550)

[Testing] Add tests for all functions in FileUtils (Submitty#4531)

* [Testing] Add tests for all functions in FileUtils

* Fix syntax error

[Bugfix:Notifications] Subscribe and unsubscribe to all now include s…

…elf notifications (Submitty#4499)

* added required class to both self notification settings

* remove unnecassary changes

[Bugfix:Autograding] shipper worker timeout (Submitty#4496)

* wip

* anotherwip

* removed timeout

[Feature:Autograding] update left-right seating gradeable (Submitty#4466

)

* non router works

* added port ranges

* fixes

* update left right notebook gradeable

* update

[Refactor] Use a Set for JS and CSS files to load (Submitty#4352)

* [Refactor] Use a Set for JS and CSS files to load

* Add php-ds to dependency list for travis

* Add tester methods for addJs and addCss

* Install php-ds for unit test dependency

* Convert apt install for php-ds to pecl install

* try and use apt for php-ds

* Work on using php-ds from apt for travis

* add missing apt-get update

* Use PECL to install php-ds for travis

* Update .travis.yml

[Bugfix:Authentication] Only log logout attempt if from an active ses…

…sion (Submitty#4393)

* [Bugfix] Fix thrown exception when going to logout when already logged out

* Test logout exception

* Add missing mock method

* Revert "Add missing mock method"

This reverts commit 17017e6.

* Add mock method if logged_in config set

* only wrap if around log line

* Add return type for SessionManager

[Bugfix:Sidebar] wrap sidebar titles when lengthy (Submitty#4385)

[Bugfix:InstructorUI] web GUI for adding existing student (Submitty#4371

)

* fix new user ui

* delete all

[Bugfix:Submission] Team of 1 Submission Notification Error(Submitty#…

…4341)