the API dropped their free tier

should help clear out the draft when a post is created.

for #109

add syndication reload button to the settings screen

makes the login experience a bit friendlier to non-developer users

closes #87

this allows tag values to contain spaces, which is up to your own micropub server to handle appropriately.

closes #95 and replaces #96

closes #72

let's give this a shot

closes #71

* new route `/edit?url=` intended to be used as an edit button target, which detects the type of post and redirects to the appropriate editing interface
* implemented the edit interface for favorites

* now you can enter alt text for photos. see https://www.w3.org/TR/micropub/#uploading-a-photo-with-alt-text for details
* if the note has alt text, then the request is sent as JSON instead