Check if browser supports MediaQueryList/matchMedia

On browsers that don't support matchMedia or MediaQueryLists's
addListener method, an error would be thrown and selfoss.init()
might not execute correctly.
Share an item on public mode and not logged in

To be able to share an item on public mode and not logged in, i suggest to remove ```!important``` on L 808 from css/style.css
Merge pull request #277 from ianbogda/patch-4

Share an item on public mode and not logged in
Merge pull request #276 from seanrand/mediaquery-fix

Check if browser supports MediaQueryList/matchMedia
Set per default autodiscovery. On error retry with force_feed.
Remove touch support. There is no possibility to prevent swipe events on scrolling in items. There is also no possibility to set a sensivity for vertical scrolling for swipeLeft or swipeRight in the quojs framework.
Get the favicon if there is no shortcut icon
Add a slash between url and the icon path)
Add another parameter "type"

Now you can choose a tag and a type ("starred" or "unread") for an individual feed
Merge pull request #283 from Roromis/master

Fix : Some icons weren't fetched
Merge pull request #284 from Darkwing1/patch-3

Add another parameter "type"
add trailing slash for url on shortcuticon