Closes #1547 Display impact level on project page.

Implement impact level as a statement about a system of type "fisma_impact_level"
with imoact level in body. This continues idea that statements are
factual observations about a system.  Statement must be associated
with system.root_element and be consumed by root_element.

CHANGELOG.md

@@ -4,9 +4,13 @@ GovReady-Q Release Notes
 v999 (April XX, 2021)
 -------------------------
 
+**UI changes**
+
+* Display system impact level on project page.
 
-[Add changes here]
+**Data changes**
 
+* Use statement type `fisma_impact_level` to track impact level of a system.
 
 v0.9.3.3 (April 13, 2021)
 -------------------------

siteapp/views.py

@@ -946,10 +946,18 @@ def project(request, project):
     if approx_compliance_degrees > 358:
         approx_compliance_degrees = 358
 
+    # Fetch statement defining FISMA impact level if set
+    impact_level_smts = project.system.root_element.statements_consumed.filter(statement_type="fisma_impact_level")
+    if len(impact_level_smts) > 0:
+        impact_level = impact_level_smts[0].body
+    else:
+        impact_level = None
+
     # Render.
     return render(request, "project.html", {
         "is_project_page": True,
         "project": project,
+        "impact_level": impact_level,
 
         "controls_status_count": project.system.controls_status_count,
         "poam_status_count": project.system.poam_status_count,

templates/project.html

@@ -197,7 +197,15 @@ <h2 class="status">{{ poam_status_count.Open }}</h2> <span class="status-small">
         <div class="status-box-invisible">
           <h2 class="piechart" style="background-image: conic-gradient(#E1F8E2 {{ approx_compliance_degrees }}deg,
                                                                        #B2E0B2 0 235deg);"> </h2>
-          <span class="status-small">{{ percent_compliant_100|floatformat:2 }}% compliance (unassessed)<span>
+          <span class="status-small">{{ percent_compliant_100|floatformat:2 }}% compliance (unassessed)</span>
+          <br/>
+          <span class="status-small">
+            {% if impact_level %}
+              mission impact: <b>{{ impact_level|lower }}</b>
+              {% else %}
+              mission impact: <b>not categorized</b>
+            {% endif %}
+          </span>
         </div>
       </div>
     </div>