#7 New forms

* introduces bootstrap class form-control for proper html form input rendering
* fixes bug where missing shared users for an entry resulted in a None exception
* adds GenerateInput with template in generate-content-input.html, which provides a generate button for fetching server-side content
* adds/updates translations

intervention/inputs.py

@@ -12,4 +12,21 @@ class DummyFilterInput(forms.HiddenInput):
 
 
 class TextToClipboardInput(forms.TextInput):
-    template_name = "konova/custom_widgets/text-to-clipboard-input.html"
+    template_name = "konova/custom_widgets/text-to-clipboard-input.html"
+
+
+class GenerateInput(forms.TextInput):
+    """
+
+    Provides a form group with a button at the end, which generates new content for the input.
+    The url used to fetch new content can be added using the attrs like
+
+    widget=GenerateInput(
+        attrs={
+            "url": reverse_lazy("app_name:view_name")
+            ...
+        }
+    )
+
+    """
+    template_name = "konova/custom_widgets/generate-content-input.html"