Evaluation Setup

Created a response and query entity for making and recording evaluation
questions/answers. Setup the manage evaluation page so you can create
and remove questions.
Save Queries

You can now create and edit queries. Deleting does not work.
Global Settings setup

Global settings now render to the manage exams page.
Some global settings

Added support for multiple field trips. Also made signing in impossible
until the opening date.
Store Default Queries globally
Add multiple choice

Added the javascript/html/css to add multiple choices questions with a
number range.
More evals stuff

Made multiple choice/response questions share an entity and render
correctly in both the admin and public eval pages.
Save Student Evals
Delete Orphans
Evaluation Review
Update bio:setup, readme
Download evaluations
Merge branch 'trip-overhaul' into global-settings