createMergedBlanksRegExp(str) {
    return str.replace(/[\s]+/gmi, '[\\s]+');
  }
Creates a regular expression string to match the specified string with the
defined accuracy. As in the regular expression of "exactly" can be a group
containing a blank at the beginning, all regular expressions will be
created with two groups. The first group can be ignored (may contain
the said blank), the second contains the actual match
@param  {string} str - The searm term to be used
@return {string}