Action system improvements

- Actions/spells now display their summary, not their description
- All save branches and attack branches run when there are no targets
- Improved action logging
- Index branch lets you customise a choice of children to run

app/imports/api/properties/Branches.js

@@ -18,6 +18,8 @@ let BranchSchema = createPropertySchema({
       'eachTarget',
       // Pick one child at random
       'random',
+      // Pick one child based on a given index
+      'index',
       // if it has option children, asks to select one
       // Otherwise presents its own text with yes/no
       //'choice',

app/imports/api/properties/Rolls.js

@@ -41,6 +41,11 @@ let RollSchema = createPropertySchema({
     parseLevel: 'compile',
     optional: true,
   },
+  // Prevent the roll from showing up in the log
+  silent: {
+    type: Boolean,
+    optional: true,
+  },
 });
 
 let ComputedOnlyRollSchema = createPropertySchema({