Rename generic Concept and Field views to *Info

Each view only renders the info about the object including
name, description, category (for concepts). This makes their
meaning less ambiguous.
Break out nodes classes to separate modules

Add support for public nodes and seamless updates on
subsequent responses from the server.
Add tests for checking event triggering

These tests include the most end-to-end testing of the API.
Propagate options.create to declare an explicit node type

For new nodes that are not technically valid, this caused a
validation error since the type was being inferred.
Move convenience methods onto the ContextNodeModel

The _internal_ nodes drive the state of their public nodes, therefore
the methods do not need to be on the BaseNode (in which the public nodes
are derived from).
Public branch children now reference existing public nodes

Previously each collection received a copy of the attributes which
caused redundant nodes and excessive event firing. Even a single
concept, single field _tree_ would result in two additional copies
of the condition public node and 1 additional copy of concept branch
node.

Uses references removes these redundant copies. This also fixed an issue
in which a different copy was firing the "change" event than the one
bound by the a given view.
Add initial context filter list

This currently supports disabling and removing filters in a flat
manner. Root-level actions also exist for clearing all filters or
temporarily disabling all filters.
Update RequireJS and r.js to 2.1.6
Update FontAwesome to 3.1.0
Move base views into separate module

This includes the EmptyView, ErrorView and LoadView. These are general
purpose views for rendering different states of the view.
Update Bourbon to 3.1.6
Add Grunt sass and requirejs tasks

This is another step towards replacing the Makefile.
Remove and ignore dist directory

This has been a nuisance and is not necessary to have in version
control. Tagged releases will be hosted elsewhere.
Add ContextInfo view for displaying object count and additional details
Add fallback empty view for zero-length distribution charts
Add ConceptPanel for containing the queryable concept index and search

This has replaced the left-hand side of the QueryWorkflow to include the
search as well rather than just the index.
Add coffee watch task to Gruntfile
Rename ContextNote => ContextItem, various clean up