Changes to forms, templates, webapp, and requirements.txt
forms.py: Added TextAreaField for EventForm description field and SearchForm users field
requirements.txt: Added Whoosh and Flask-WhooseAlchemy; plan to use this for dynamically generating search results for user names when using the SearchForm
templates: changed base.html so that page container div has class container-fluid.  Also added testing template field_test.html in order to check operation of socketio extension.  Also added search page search.html for use with SearchForm