Add feedback component

[paulbert]

Feedback component should have a form which adds the following to a new feedback database:

• The current user adding the feedback
• The route the user is adding the feedback from
• An urgent flag (true/false)
• A type with Bug, Question, or Suggestion
• The text of the feedback. The BeLL-Apps has a rich text editor, but plain text should be fine.

Notes:

• The popup in the BeLL-Apps is very clunky, so let's try to start with some good style here.
• Since it's added as a popup it won't be another route, but a component that is a child of the home component.
• The Vagrantfile will need an update to create a feedback database when it is created.

[paulbert]

@alexkarasik I saw you're feeling ready to try adding a component to the app. This might be a good place to start! Let me know if you have any trouble or need more detail.