Sidebar fixing is now testing for existence of the sidebar :)
Added buttons to files and added possibility to download them
redirected downloading
Created general css class for buttons
Finished the buttons
Some html/css changes about correct widths in connection with changing the logic for showing/hidding the sidebar. Now the sidebar is included only if block exists, do not need variable from the presenter.
Added GPL license and changed readme
Changed detection of mimetypes to return an category for the highlighter