minor fix to text range evaluation

package.json

 {
   "name": "mcClient",
-  "version": "0.2.1",
+  "version": "0.2.2",
   "author": "Ionic Framework",
   "homepage": "http://ionicframework.com/",
   "private": true,

src/pages/corpus-detail/corpus-detail.ts

 import {Component} from '@angular/core';
 import {IonicPage, NavController, NavParams, ToastController} from 'ionic-angular';
 import {CorpusProvider} from "../../providers/corpus/corpus";
-import {GetValidReff} from "../../models/getValidReff";
 import {CitationLevel} from "../../models/enum";
 import {ShowTextPage} from "../show-text/show-text";
 import {TextRange} from "../../models/textRange";
@@ -131,22 +130,25 @@ export class CorpusDetailPage {
 
     checkTextRange(citationLabelsStart: string[], citationLabelsEnd: string[]) {
         return new Promise(resolve => {
-            let wholeTextRangeLabels: string[] = citationLabelsStart.concat(citationLabelsEnd);
             if (this.corpusProvider.currentCorpus.citation_level_2 === CitationLevel[CitationLevel.default]) {
-                if (wholeTextRangeLabels.length > 2) {
-                    return false;
+                if (citationLabelsStart.length !== 1 || citationLabelsEnd.length !== 1) {
+                    resolve(false);
+                    return;
                 }
             }
-            else if (wholeTextRangeLabels.length <= 2) {
-                return false;
+            else if (citationLabelsStart.length < 2 || citationLabelsEnd.length < 2) {
+                resolve(false);
+                return;
             }
             if (this.corpusProvider.currentCorpus.citation_level_3 === CitationLevel[CitationLevel.default]) {
-                if (wholeTextRangeLabels.length > 4) {
-                    return false;
+                if (citationLabelsStart.length !== 2 || citationLabelsEnd.length !== 2) {
+                    resolve(false);
+                    return;
                 }
             }
-            else if (wholeTextRangeLabels.length <= 4) {
-                return false;
+            else if (citationLabelsStart.length !== 3 || citationLabelsEnd.length !== 3) {
+                resolve(false);
+                return;
             }
             this.citationValuesEnd = [];
             this.citationValuesStart = [];