Merge branch 'release_3.1.3' into devel

* release_3.1.3: (52 commits)
  ack fact scan messages
  making ldap user/group search fields into codemirror instances
  removing UI parsing for LDAP User and Group Search fields
  Allow exception view to accept all valid HTTP methods.
  Restore ability of parsing extra_vars string for provisioning callback.
  Fix up backup/restore role broken in f7a8e45809758322d9ee41c5305850dd70ed5faf
  Stop / start ansible-tower-service during restores
  value_to_python should encode lookup fields as ascii
  fix brace interpolation on standard out pane
  Adjust some hardcoded usages of 'awx' to use 'aw_user' and 'aw_group'.
  Pull Spanish updates from Zanata
  Temporarily grant awx user createdb role
  Stop giving ownership of backups to postgres
  don't display chunked lines'
  Add dropdown li truncation with ellipsis
  CTiT -> adhoc modules should allow the user to add new modules
  Remove task that was replacing the supervisor systemd tmp file
  Fix failing supervisorctl commands on RH-based distros
  Give ownership of the supervisor socket to awx
  Setting for external log emissions cert verification
  ...

awx/ui/client/legacy-styles/forms.less

@@ -353,7 +353,6 @@
 
 .select2-results__option{
     color: @field-label !important;
-    height: 30px!important;
 }
 
 .select2-container--default .select2-results__option--highlighted[aria-selected]{
@@ -692,3 +691,15 @@ input[type='radio']:checked:before {
 .alert-info--noTextTransform {
     text-transform: none;
 }
+
+.select2-results__option {
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+}
+
+.select2-results__option:hover {
+    overflow-wrap: break-word;
+    white-space: normal;
+}
+