add reservation options to form and submission templates

form.yml.erb

@@ -38,10 +38,16 @@ attributes:
       - [ "<%= p %>", "<%= p %>" ]
     <%- end -%>
 
+  bc_reservation:
+    widget: "text_field"
+    label: Reservation
+    default: ""
+
 form:
   - desktop
   - bc_num_hours
   - bc_partition
+  - bc_reservation
   - bc_num_gpus
   - bc_num_slots
   - bc_num_mems

submit.yml.erb

@@ -25,7 +25,7 @@ script:
     - "--mail-type=BEGIN"
     - "--mail-user=<%= email %>"
 <%- end -%>
-<%- if bc_email_on_started == "1" -%>
-    - "--mail-type=BEGIN"
-    - "--mail-user=<%= email %>"
+<%- if bc_reservation != "" -%>
+    - "--reservation=<%= bc_reservation %>"
 <%- end -%>
+