Fix problem with space added at the end

Changes:
* Fixed issue with space being added at the end that prevented automatic syntax highlighting and caused other issues (e.g. building with Ctrl+B).
* Made the installer smarter.
* Added bat file to revert notepad redirection.

Fixes issue 1, issue 2 and issue 3.

Please note that since Github has deprecated the downloads section, you have to host the new version in the repository. I suggest creating an "assets" directory and put the new zip there.

Thank you.