Dependency update and rebuild.

Executed ‘npm update’ to update various node-modules.  Also rebuilt
some components (build tools were not installed on previous dev machine.
Added another WebStorm file to .gitignore.
Fixed redirection bug by sending redirect in JSON.
Added code to handle success redirect in JSON response.
Reinstalled mongoose and mongodb modules.

Unistalled mongoose because it was using an unstable version.  Rebuilt
and reinstalled stable mongoose.  Uninstalled mongodb because it was
not build correctly during previous install (lack of developer tools on
machine that installed it).  Rebuilt and reinstalled stable mongodb.
Cleaned up registration message.
Removed 'about' link (broken) and added Admin link.
Added express-validator module.
Configures express-validator.
Added validation logic and validation error response.
Added logic to display error messages received via JSON.
Added post handling and form validation.
Added error modal and post submit via AJAX.

Handles error messages received via JSON.  Is ready for authentication
results, when provided.
Updated planned and implemented features.
Merge branch 'dev-0.0.4'