make annual spending threshold available to request templates

atst/routes/requests/__init__.py

@@ -1,7 +1,13 @@
 from flask import Blueprint
 
+from atst.domain.requests import Requests
+
 requests_bp = Blueprint("requests", __name__)
 
 from . import index
 from . import requests_form
 from . import financial_verification
+
+@requests_bp.context_processor
+def annual_spend_threshold():
+    return { "annual_spend_threshold": Requests.ANNUAL_SPEND_THRESHOLD }