Report all crashes when not a Play store install

app/src/main/java/eu/faircode/email/ApplicationEx.java

@@ -86,8 +86,13 @@ public class ApplicationEx extends Application {
     public boolean ownFault(Throwable ex) {
         if (ex instanceof OutOfMemoryError)
             return false;
+
         if (ex instanceof RemoteException)
             return false;
+
+        if (!Helper.isPlayStoreInstall(this))
+            return true;
+
         while (ex != null) {
             for (StackTraceElement ste : ex.getStackTrace())
                 if (ste.getClassName().startsWith(getPackageName()))