Added file for storing and parsing all themes

app/views/themes.yml

@@ -0,0 +1,22 @@
+# Seasonal themes for Haldis
+- lightmode:
+        file: lightmode.css
+        type: default
+- darkmode:
+        file: darkmode.css
+        type: default
+- halloween:
+        file: halloween.css
+        type: static-date
+        start: 21/10
+        end: 10/11
+- sinterklaas:
+        file: sinterklaas.css
+        type: static-date
+        start: 28/11
+        end: 16/12
+- kerstmis:
+        file: kerstmis.css
+        type: static-date
+        start: 15/12
+        end: 31/12