Bug 730418 - man page extension is incorrect

Test in respect to handling extension was tone wit equal less than / greater than sign and should only be less than and greater than. Resulting in the fact that in case of a chosen extension starting with  .0 or .9 an 3 was pre-pended.
Merge pull request #173 from albert-github/feature/bug_730418

Bug 730418 - man page extension is incorrect