Added Objective factory

We probably need to think of something better to fill these attributes
with. In the meantime I’m using lore ipsum.
Extracted Objectives into it's own object

We’re using a nested form temporarily, however I intentionally broke
the ability to add multiple objectives for the minute as we’re going to
refactor the view and remove the nested form declaration in Agreement
later.
Extract budgetary responsibilities into objects

As with objectives, this is a regression in that cloning no longer
works.
Fix errant indentation
Objectives skeleton

Pulling out objectives into their own view and controller
Merge branch 'development' into associated-objects

Conflicts:
	app/controllers/agreements_controller.rb
Remove unused jobholder/manager set via email

We weren't using it, and as we're going to start off by seeding all our
users, we won't need it.
Split responsibilities and objectives

These are currently implemented via very thin delegators.
Restore adding and removing rows

Using nested_form, which handily provides most of the required
functionality, including JavaScript.
Remove objectives controller: they're nested now
Add flash text for objectives and responsibilities