[BB-3966] Fix UX issues

Created by: arjunsinghy96

Fix the UX issues mentioned in this comment

Related Tickets

1. BB-3966
2. Gitlab#723

Testing Instructions

1. Checkout to this branch
2. Run ocim frontend and visit http://localhost:3000
3. Verify that all the issues mentioned in this comment are fixed.
   • Header, Redeployment Toolbar and Content is aligned properly on left and right
   • Footer is fixed to the bottom
   • Navbar active state bleeds off from Manage Course Page (new sidebar)
   • Fix Redeployment toolbar message. Should say preparing for first deployment.

Screenshots

Reviewers

• @farhaanbukhsh