Reorganize macros into separate component files

Replace a few old UI Module instances with  macros

templates/requests/screen-3.html

@@ -1,6 +1,7 @@
 {% extends 'requests_new.html' %}
 
-{% from "components.html" import Alert, TextInput %}
+{% from "components/alert.html" import Alert %}
+{% from "components/text_input.html" import TextInput %}
 
 {% block subtitle %}
 <h2>Primary Government/Military <br> Point of Contact (POC)</h2>