Add new UA test script containing modern browsers

Renamed old test script to
UserAgentParser.test.oldbrowsers.php

Conflicts:
	libs/UserAgentParser/UserAgentParser.test.php
Separate entry for Windows 8.1

With abbreviation W81 (instead of WI8)

Conflicts:
	libs/UserAgentParser/UserAgentParser.php
Add recognition of IE11, Opera 15+, Maxthon
Various fixes

Add one more entry for Windows 8.1
Add icons for Windows 8.1 and Maxthon
Fix unit test failures
Merge pull request #164 from mpopp75/useragents-1.x

Recognition for IE11, Opera 15+ and Maxthon, made Win 8.1 for version 1.X