template.html: viewport width for mobile browsers

Set html5 meta viewport width to device-width. A mobile browser now scales up the directory listing and dir-/filenames are easier to read and click/touch.
template.h: viewport width for mobile browsers

Set html5 meta viewport width to device-width. A mobile browser now scales up the directory listing and dir-/filenames are easier to read and click/touch.
Merge pull request #9 from quatauta/master

HTML template: Add meta viewport for mobile browsers