refactoring of jobs/tasks module
refractor job/task module
finish job refractoring, renaming extension to format and debug
add tests for job module (need to be fixed)
Fix for tests
Added initial test for job editing
Updated requirements.txt

Seems a bit crowded, maybe we can clean it up at some point.
add migrations in gitignore and clean tests file
Merge pull request #52 from msimoncz/dev

Large Shots -> Jobs / Jobs -> Tags refactoring