Removed unnecessary check if sandbox course exists

Since using timestamp as part of course_id, sandbox being created should be unique.
Made search query optional when getting course list for a given term

Now, if no search query is given, it will return the entire course list for that given term
Merge pull request #55 from ronvs/fix-sandbox-course-function

Removed unnecessary check if sandbox course exists
Merge pull request #56 from ronvs/course-list-api-update

Made search query optional when getting course list for a given term
Add SIS ID column to new Gradebook

Part of CANVAS-188
Enable filtering by SIS ID in new Gradebook

Related to CANVAS-188
New api calls, js methods and ui form for course search feature
Update course_form_controller.rb
Bug fixes/improvement after selecting a course from the search list & change error text
Merge branch 'manual-course-search-ui' of github.com:ronvs/canvas-lms into manual-course-search-ui
Merge pull request #59 from ronvs/manual-course-search-ui

Course search form feature
Merge pull request #58 from va7map/canvas188

CANVAS-188 Add student number column to the New Gradebook
add push_app_servers method to production.rb

Signed-off-by: Graham Ballantyne <grahamb@sfu.ca>
modify environment deploy files to use push_app_servers

Signed-off-by: Graham Ballantyne <grahamb@sfu.ca>
Merge pull request #60 from grahamb/sfu-develop

Sfu develop