[Library | Trunk]: Add capitalize function on string utils

git-svn-id: https://svn.driver.research-infrastructures.eu/driver/dnet40/modules/uoa-services-library/trunk/ng-openaire-library/src/app@57926 d315682c-612b-4755-9ff5-7f18f6832af3

utils/string-utils.class.ts

@@ -137,6 +137,10 @@ export class StringUtils{
     return sliced + (String(mystr).length > size ? '...' : '');
   }
   
+  public static capitalize(value: string): string {
+    return value.charAt(0).toUpperCase() + value.slice(1);
+  }
+
   public static URLSegmentsToPath(segments: UrlSegment[]): string {
     let path = '';
     segments.forEach(route => {