This reverts commit ba92681d2fed403a00b49e13697b13aa37e0e855, reversing
changes made to 71dd9111bad26d5d4235ecdd1b42c60591cd2f35.

CodeAuth plugin (user authentication functions for host side)

If you load this plugin (which is disabled by default), these methods
can be used for integrating H login mechanism with code living
on the host page:

 * annotator.getLoginStatus()
 * annotator.loginWithUsernameAndPassword(username, password)
 * annotator.logout()
 * annotator.registerUser(username, email, password)

These all return promises.

Furtheremore, the following events have been introduced:

 * annotatorLogin, upon successfull login
 * annototorLogout, upon log out

Note: these events are *not* fired in cases when the events were
triggered by a call from the given host/guest-side annotator instance;
use the promises to react those events. The events only happen if
these events were triggered from the sidebar, or from other host/guest
frames.

If sidebar is closed, display flash messages in the host frame

In sidebar:
 * Save our H instance as window.annotator
 * Add isOpen() method to test if the sidebar is open
 * Removed unused draft dependency from controller

In host document:
 * Add support for showing the flash messages
 * Save the Annotator class as @Annotator
 * Redefine the notification level constants in Annotator.Notification
   so that they are consistent with the ones used in the sidebar

Flash message service:
 * Add workaround for duplicate "invalid uname or pw" error message,
   and also swallow the "your submission was invalid" in this case.
 * When the sidebar is closed, pass the message to the host frame
   instead.

Fixes #886.

There were some cases when we tried to reload the annotations
(upon detecting auth state) even before the store plugin
was initialized, and this caused an error message.

This check works around this problem.

Fixes #899.

Lookup exact username from the db for stream-search

When a force login is in effect H removes all annotations and reloads them. In the reload process if the clickAdder() call is happenning too soon then an empty reference will be put in a heatmap bucket instead of the newly created annotation, thus resulting a "zombi" in the Viewer.

This may help for #881

Sometimes this call could get undefined elements (already deleted) in its annotations argument. This change filters these and only displays valid annotations.

One tricky source to create these undefined elements is: trying to create a new annotation when no user is logged in and also H is in dynamic bucket mode. Here when we realize that a login is needed, we already have an annotation stub, which we delete in the login process but the heatmap annotation items in the _fillDynamicBucket() before the login and an undefined empty stub survives. This will be an 'undefined' item in the updateViewer(annotations) call.

Fixes #897

Fixes #697 (also known as #879).

Adjusted tab positioning at the request of @dwhly.

since our updated Angular.js version has it now.
Fixes #854.

Thanks to @gergely-ujvari for the tip.

Fixes #858

Don't use single-phase fuzzy matching for quotes shorter than 32 characters.
Fixes #853.

Fixes #789.

The page_search didn't well annotation deletions if they were top-level annotations. It is because it stored its annotation list at $scope.threads and this was not prepared for delete. Similar to $rootScope.annotations (once they will be unified), now it is using $rootScope.search_annotations to store the top-level hits and prepared for delete.

Fixes #850

This brings the	following improvements:
 * Merged some bugfixes from upstream Annotator.
   Probably fixes #453 and fixes #501.
 * Brings back to sync our Annotator maintenance branch,
   the Annotator sources embedded in H,	and the	annotator JS embedded in H.

The new version has an patch on the diff-match-patch library,
which can detect a problem hidden deep within Chrome's v8 engine,
and warns the user to upgrade Chrome when the problem occurs.

Made font on heatmap-pointer tabs slightly smaller at the request of @dwhly

The SearchController.refresh() function has been enhanced in a way that it keeps track of already chosen top-level annotations that way for every annotation we check if the root is already added or not. If added we don't have to add it again. This on
Fixes #849

Fix #845

Adds stickybuttons to the toolbar.