hollow-owl

Fix get_server_members

1

get_server_members was giving ``` Err( Json( Error("missing field `id`", line: 1, column: 383), ), ) ``` Since the api returned Members instead of users.

**Is your feature request related to a problem? Please describe.** Currently there is no indication when adding a feed if it is a duplicate. The "+Add Livemark" button will add...

Disable subscribe button if feed exists in folder

3

Closes #478 Button gets disabled when folder is already there 

Add manifest and service worker so that it becomes a PWA and can be used offline