Merge pull request #74 from fiuba/fix-grid-filtering

Fix for EditableGrid filter storage issue
Merge branch 'master' of https://github.com/fiuba/alfred
Merge branch 'master' of https://github.com/fiuba/alfred
Fixed spec name
Fixed bug which prevented notifications to be delivered on Correction

creation
Merge remote-tracking branch 'origin/master' into develop
Added dotenv development dependency
Allow a single Course to be active at a time
Force DM auto_migrate after each test is ran
Force an active course if none is available
New current_course was not being set
Auto assign Courses to Accounts on creation (and vice versa)
Call dotenv only if available on environment
Nullifying current course from session's data
Merge pull request #83 from fiuba/active_course_fix

Keep a single active course
Fixed error when no deadline is set on Assignment
Source's minor version raised
Merge pull request #85 from fiuba/source_version

Source's minor version raised
Filter correction status by current course
Merge branch 'develop' into acceptance_tests