Installation in 2-characters folders possible

Unlike CMSimple_XH, CMSimple 4.0 or higher can be installed in 2-characters directories. So an old problem of CMSimple is solved.

In the past there were often calls for help in the forum, and as a reason for the problems turned out that somewhere was a 2-characters folder in the URL. CMSimple_XH has interpreted it as an installation of a second language and put links and references wrong.

In CMSimple 4.0 or higher a second language is detected by a file "cmsimplelanguage.htm" in the root folder of a second language. This file is already included in the copy template folder "2lang".