adds mdi icons, improves recipe design

planner/src/solver.rs

@@ -77,9 +77,10 @@ impl<'a,V, K: Eq + Hash + Clone> Problem<'a, V, K> {
         ProblemBuilder::new()
     }
 
-    pub fn from_template(_template: i32) -> Problem<'a, V, K> {
-        Self::build()
-            .finish()
+    pub fn from_template() -> Problem<'a, V, K> {
+        let mut builder = Self::build();
+
+        builder.finish()
     }
 
     /// Returns all possible Updates for next assignements, prepended with