Table filters

* adds table filtering for InterventionTable
* adds default ordering
* moves user-access filtering from view to InterventionTableFiler
* adds generic render_icn method for BaseTable (for usage with fontawesome5)
* adds translations
* improves table.html template

konova/static/css/konova.css

@@ -37,6 +37,10 @@ Declare some basic colours
     color:var(--rlp-red);
 }
 
+.rlp-r-inv{
+    color:var(--rlp-red);
+}
+
 html {
   position: relative;
   min-height: 100%;

konova/utils/tables.py

@@ -126,6 +126,16 @@ class BaseTable(tables.tables.Table):
             icon
         )
 
+    def render_icn(self, tooltip: str = None, icn_class: str = None):
+        """
+        Returns a rendered fontawesome icon
+        """
+        return format_html(
+            "<em title='{}' class='{}'></em>",
+            tooltip,
+            icn_class,
+        )
+
 
 class ChoicesColumnForm(BaseForm):
     select = forms.ChoiceField(