Add more checks on parsing from JSON, fix of those issues on the builtin themes

assets/layers/bird_hide/birdhides.json

@@ -161,7 +161,7 @@
         {
           "if": {
             "and": [
-              "operator~Natuurpunt"
+              "operator=Natuurpunt"
             ]
           },
           "then": {

assets/themes/bookcases/Bookcases.json

@@ -252,7 +252,7 @@
             "en": "What is the reference number of this public bookcase?",
             "nl": "Wat is het referentienummer van dit boekenruilkastje?"
           },
-          "condition": "brand=*",
+          "condition": "brand~*",
           "freeform": {
             "key": "ref"
           },

assets/themes/cyclestreets/cyclestreets.json

@@ -12,7 +12,6 @@
   "maintainer": "MapComlete",
   "widenfactor": 0.05,
   "roamingRenderings": [
-    "pictures",
     {
       "question": "Is deze straat een fietsstraat?",
       "mappings": [