Merge pull request #3 from ssebs/master

spaces + misc pages

fix links on page

More error checking

Support for attachements without filename extensions.

Sanitized space folders

Sanitization of pages and attachments, little bugfixes

Cleaned up some code.

File names are numbered only if there is already a file with the same name.

Typo

Optimized relative file paths.

Supported relative paths for confluence root directory.

Sanitization of file names and avoiding duplicate file names.

Improved (error) outputs.

Sanitized space folder names.