use new search style for group filter

core/forms.py

@@ -78,6 +78,9 @@ class LayoutMixin:
         if hasattr(self, 'inline') and self.inline:
             h.field_template = 'bootstrap3/layout/inline_field.html'
             h.form_class = 'form-inline'
+        if hasattr(self, 'search') and self.search:
+            h.field_template = 'bootstrap3/layout/inline_field.html'
+            h.form_class = 'form-search'
         return h
 
     def get_layout(self):

features/groups/forms.py

+from crispy_forms import layout
 from django import forms
 from django.contrib.contenttypes import models as contenttypes
 
@@ -8,8 +9,11 @@ from . import models
 
 class GroupFilter(core.forms.FormMixin, forms.Form):
     name = forms.CharField()
-    inline = True
-    layout = ('name', core.forms.Submit('Gruppen filtern', field_classes='btn btn-default'))
+    search = True
+    layout = (
+        layout.Field('name', placeholder='z.B. Foodcoop'),
+        core.forms.Submit('Gruppen suchen', field_classes='btn btn-default')
+    )
     method = 'GET'