Stack simplification removing, more precise HasImage checking, Question getting small fix

main.js

@@ -221,23 +221,7 @@ class StringUtils {
   }
 
   SimplifyStack (stack) {
-    stack = this.SimplifyQuery(stack)
-    let ns = ''
-    let adding = true
-    stack.split('').forEach((c) => {
-      if (c === '(') {
-        adding = false
-      }
-
-      if (adding) {
-        ns += c
-      }
-
-      if (c === ')') {
-        adding = true
-      }
-    })
-    return ns
+    return this.SimplifyQuery(stack)
   }
 }
 
@@ -263,7 +247,7 @@ class Question {
   }
 
   HasImage () {
-    return this.I !== undefined
+    return this.I !== undefined && (typeof this.I === 'string' || Array.isArray(this.I))
   }
 
   IsComplete () {
@@ -550,8 +534,10 @@ class QuestionsPageModell {
       Log('Some error with images')
     }
 
-    questions = questions.map((item, ind) => {
-      return SUtils.ReplaceCharsWithSpace(item, '\n')
+    questions = questions.map((item) => {
+      if (item) {
+        return SUtils.ReplaceCharsWithSpace(item, '\n')
+      }
     })
 
     return {