Resolve "Student initiated Canvas synchronization"

Closes #125

See merge request !117

Expanded resource queries

Closes #25

See merge request !106

Resolve "Student task page fails to load"

Closes #142

See merge request !122

Display IP log for submissions

See merge request !116

Introduce support for runtime configurable environment variables

Closes #140

See merge request !120

Resolve "Regular tasks for Canvas synchronized groups"

Closes #126

See merge request !123

Resolve "Do not show Add Group button for instructors"

Closes #120

See merge request !118