make switch landscape/portait mode funtional

app/src/main/java/org/wntr/mdeditor/MainActivity.kt

@@ -51,7 +51,8 @@ import kotlin.concurrent.fixedRateTimer
 
 class MainActivity : AppCompatActivity() {
     private val easyMDEscript = """
-        const easyMDE = new EasyMDE({
+        if (typeof easyMDE != 'undefined') throw new Error("easyMDE already loaded"); 
+        easyMDE = new EasyMDE({
             spellChecker: false,
             nativeSpellcheck: false,
             maxHeight: String(windowHeight-120)+"px",
@@ -268,6 +269,7 @@ class MainActivity : AppCompatActivity() {
     override fun onResume() {
         super.onResume()
 
+
         if (!readOnResume) {
             readOnResume = true
             autosaveTimer = fixedRateTimer("timer",true,0,5000){
@@ -479,7 +481,6 @@ class MainActivity : AppCompatActivity() {
                         saveFile()
                     }
                 }
-
             }
         }
         return true
@@ -1051,6 +1052,7 @@ class MainActivity : AppCompatActivity() {
         } catch (e: UninitializedPropertyAccessException) {
             Log.d(javaClass.simpleName, "Webview not yet loaded.\n$e")
         }
+        easyMDELoaded = false
         Log.i(javaClass.simpleName, "\"onPause\" durchlaufen")
     }