reducing card size in database if no planning poker was started

reducing:
- cards collection size
- database size
- size to transfer from server to client (publish / subscribe)

models/cards.js

@@ -351,7 +351,7 @@ Cards.attachSchema(
     },
     'poker.question': {
       type: Boolean,
-      defaultValue: false,
+      optional: true,
     },
     'poker.one': {
       /**
@@ -359,7 +359,6 @@ Cards.attachSchema(
        */
       type: [String],
       optional: true,
-      defaultValue: [],
     },
     'poker.two': {
       /**
@@ -367,7 +366,6 @@ Cards.attachSchema(
        */
       type: [String],
       optional: true,
-      defaultValue: [],
     },
     'poker.three': {
       /**
@@ -375,7 +373,6 @@ Cards.attachSchema(
        */
       type: [String],
       optional: true,
-      defaultValue: [],
     },
     'poker.five': {
       /**
@@ -383,7 +380,6 @@ Cards.attachSchema(
        */
       type: [String],
       optional: true,
-      defaultValue: [],
     },
     'poker.eight': {
       /**
@@ -391,7 +387,6 @@ Cards.attachSchema(
        */
       type: [String],
       optional: true,
-      defaultValue: [],
     },
     'poker.thirteen': {
       /**
@@ -399,7 +394,6 @@ Cards.attachSchema(
        */
       type: [String],
       optional: true,
-      defaultValue: [],
     },
     'poker.twenty': {
       /**
@@ -407,7 +401,6 @@ Cards.attachSchema(
        */
       type: [String],
       optional: true,
-      defaultValue: [],
     },
     'poker.forty': {
       /**
@@ -415,7 +408,6 @@ Cards.attachSchema(
        */
       type: [String],
       optional: true,
-      defaultValue: [],
     },
     'poker.oneHundred': {
       /**
@@ -423,7 +415,6 @@ Cards.attachSchema(
        */
       type: [String],
       optional: true,
-      defaultValue: [],
     },
     'poker.unsure': {
       /**
@@ -431,16 +422,14 @@ Cards.attachSchema(
        */
       type: [String],
       optional: true,
-      defaultValue: [],
     },
     'poker.end': {
       type: Date,
       optional: true,
-      defaultValue: null,
     },
     'poker.allowNonBoardMembers': {
       type: Boolean,
-      defaultValue: false,
+      optional: true,
     },
     'poker.estimation': {
       /**

server/migrations.js

@@ -1443,3 +1443,17 @@ Migrations.add('attachment-cardCopy-fix-boardId-etc', () => {
   });
 });
 */
+
+Migrations.add('remove-unused-planning-poker', () => {
+  Cards.update(
+    {
+      "poker.question": false,
+    },
+    {
+      $unset: {
+        "poker": 1,
+      },
+    },
+    noValidateMulti,
+  );
+});