fixes #9

* looks for a media endpoint in the micropub config
* if media endpoint is available, both the note interface and the editor will upload files to it instead of posting the photo directly
* the note interface autosaves in-progress notes in localstorage

Also set the theme color for Chrome to the blue used
in the logo.

Firefox picks up the last defined icon PNG for the add to
homescreen feature - https://bugzilla.mozilla.org/751712

Quill corrects the photo rotation based on exif data since iOS tends to take landscape photos and set the rotation bit when holding it in portrait mode.

With this it is possible to post a photo note with a description, nothing
more. It doesn't move the file in the file system, just posts it from
the temp location to the users server. It also does validate for file size,
content type and max upload size and shows the errors to the user.

If everything goes according to plan the response from the users server
is shown, together with a link with the posted photos URL.

* disable facebook liking for now since it was getting complicated
* new page for creating a favorite, can pass in a URL parameter too
* bookmarklet code added to the "favorite" page

* Supports a bookmarklet to create "like" posts.
* Beginning a "settings" page to connect silo profiles for POSSEing likes to twitter, facebook and instagram