feat: add organisation creation, link org project and survey pages

[twinkarma]

Resolves #20

Related to #16 #17 #18

Note: I'd made a bit of a mess with some of the models so I'd had to clear out the migration files. You will likely need to re-create your database.

The Projects navigation is changed My organisation. When clicking on the navigation link, user without an organisation will be asked to create one:

Note: Users are not supposed to be able to belong to multiple organisations.

User will then be taken to their organisation page that shows a listing of their projects, they can only create new projects at the moment:

Clicking on View will take the user to the Project details page that lists all of the surveys in the project:

Clicking view will take you to the Survey details page which does not have much at the moment:

But you can test the survey response out by clicking on the Link to fill in survey (token not implemented at the moment)

After filling in the survey, you can see the survey response (I'm just printing raw json for now)

[yld-weng]

LGTM! Thanks. I've pushed two commits to remove the 'questionnaire' that is no longer used.

[f-allian]

@twinkarma Thanks Twin, looks great. The "Edit" button for each project didn't work, so I've committed a few fixes, including a ProjectEditView and an edit.html that allows users to update their project metadata (only project name for now)

[twinkarma]

Thanks for the reviews everyone, I'll merge it in now.