LT-67: Styling select2 error state and adding its error tooltip

Packages/lesiontracker/client/components/additionalFindings/additionalFindings.html

@@ -15,7 +15,7 @@
                         key='regionsOfMetastaticDisease'
                         multiple=true
                         options=(clone
-                            placeholder='Choose a region...'
+                            placeholder='Choose a region'
                             allowClear=true
                         )
                     }}

Packages/lesiontracker/client/components/serverInformation/serverInformationDicomWeb/serverInformationDicomWeb.html

@@ -11,7 +11,7 @@
         </div>
         <div class="col-lg-6">
             {{>inputSelect labelClass='form-group' key='imageRendering' hideSearch=true
-                options=(clone placeholder='Select an option...')}}
+                options=(clone placeholder='Select an option')}}
         </div>
         <div class="col-lg-6">
             {{>inputText labelClass='form-group' key='qidoRoot'}}

Packages/lesiontracker/client/components/serverInformation/serverInformationForm/serverInformationForm.html

@@ -8,7 +8,7 @@
             <div class="col-lg-6">
                 {{>inputSelect labelClass='form-group' key='type'
                     hideSearch=true disabled=(eq this.mode.get 'edit')
-                    options=(clone placeholder='Choose a server type...')}}
+                    options=(clone placeholder='Choose a server type')}}
             </div>
         </div>
         <hr>