Replace urls in a text block with anchor tags creating clickable links.

CreateAnchorTagsForUrls.ts

private createAnchorTagsForUrls(message: string): string {
   /* As it turns out finding a URL within other text is surprisingly hard. Mainly because spaces are technically legal. 
   However, if we assume that they are not, the following RegEx does a pretty good job and is still readable. */
   
   const regex: RegExp = /\b(https?|ftp|file):\/\/[\S]+/ig ;
   let ret: string = message;

   /* Check for href. If this exists we can assume that this string already contains anchor tags and should not have its
      urls replaced with anchor tags again */
   if(ret.indexOf("href=") < 0){
      ret = ret.replace(regex,'<a href="$&" target="_blank">$&</a>');
   }
   return ret;
}