prompting for login
changed login flow to a new component

* added local login
* fixed handling of names vs urls
* added special behavior of user posting at its own scrapbook.
displaying the scraps the way it should be

* descending
* limiting 25
* pagination
* reloading on post
* going back to first page on post
* forbidding visitors from making larger queries on list
* all done at the list function for less client complexity