admin: fix floating button halfway alert
mod_admin: fix replacing media items.
core: added 'is_all' option to #render{} and to the update action (where it is called include_all).
Merge pull request #628 from ArthurClemens/admin_undo_disconnected

admin: fix floating button halfway alert
mod_search: implement "or" in filter expression
mod_admin_identity: improve English dialogues
mod_admin_identity: password field should be of type "password"
Merge pull request #630 from ArthurClemens/admin_set_username

mod_admin_identity: improve set/change password dialogs
base: support for sending binary frames over a websocket.

Fixes #629.
(cherry picked from commit 087dba4979c667d944c1198a60d3f26597990220)