Add tags to dashboard

db.py

@@ -275,3 +275,24 @@ class DataBase():
     def delete_tag_for_person(self, person_id, tag_id):
         self.execute('DELETE FROM Tag WHERE person_id=%s AND tag_id=%s', [
             person_id, tag_id], commit=True)
+
+    def get_tags_for_dashboard(self):
+        return self.execute("""
+            SELECT
+                T.tag_id AS "TagId",
+                T.person_id AS "PersonId",
+                T.name AS "TagName",
+                T.filter AS "TagFilter"
+            FROM
+                Tag T
+            WHERE
+                T.person_id IS NULL
+            ORDER BY
+                T.name""", [])
+
+    def add_tag_for_dashboard(self, tag_name, tag_filter):
+        self.execute('INSERT INTO Tag (name, filter) VALUES (%s, %s)', [
+                     tag_name, tag_filter], commit=True)
+
+    def delete_tag_for_dashboard(self, tag_id):
+        self.execute('DELETE FROM Tag WHERE tag_id=%s', [tag_id], commit=True)