[#175] Hide CRUD Buttons in Rota for Office

Show CRUD Rota buttons for Admin and Rota manager
Hide CRUD Rota buttons for Player and Orch manager
	modified:   string_rota/templates/string_rota/rota.html

Add Testing for Hide CRUD Buttons in Rota for Office to README
	modified:   README.md
	new file:   readme_assets/images/testing-issue175.png

README.md

@@ -290,6 +290,8 @@ The following manual tests were made:
     - [see issue #172 here](https://github.com/mikerae/string-rota/issues/172)
 - [Fix User Profile dropdown  #171 Testing](/readme_assets/images/testing-issue171.png)
     - [see issue #171 here](https://github.com/mikerae/string-rota/issues/171)
+- [Fix CRUD Buttons for Office  #175 Testing](/readme_assets/images/testing-issue175.png)
+    - [see issue #175 here](https://github.com/mikerae/string-rota/issues/175)
 #### Human Testing
 No human testing was done for this MVP, but once office manager functionality, and the hiding of draft rotas is implemented, user feedback will be sort.
 

string_rota/templates/string_rota/rota.html

@@ -130,7 +130,7 @@ <h5 class="text-info">Please contact your Rota Manager</h5>
 
         <!-- Rota Form Section-->
         {% if user.is_authenticated %}
-        {% if user.is_staff %}
+        {% if user.is_superuser %}
         <div class="col-12 text-center">
           <a href="{% url 'add_sp_office' project.slug seating_plan.id section.id %}" class="btn btn-primary">Add
             Player to Seating Plan</a>