doc: fix typo
Merge pull request #626 from ArthurClemens/patch-6

doc: fix typo
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)
scripts: Follow symbolic links when adding a new site

When the skeleton dir is a symbolic link, the content of the link will
be copied and not the link itself. Copying the link itself breaks the
skeleton when the site is initialized.
scripts: Remove git repos when a new site is added

If the skeleton is managed in a git repo itself this information should
not leak into a new site.
core: add Steffen Hanikel to contributors file
mod_menu: Hide the removal option when a menu item is protected
core: after modules are re-indexed also flush the 'module_index' dependency key. Let cached lib file paths depend on that key. Fixes #663
mod_survey: Fix crashing survey results

Happened when a thurstone question was added after some survey results
were already entered.
doc: Clarified the template parameter of the template and page controllers.
Merge pull request #636 from hanikesn/documentation-clarfiy-template-rendering

doc: Clarified the template parameter of the template and page controlle...
mod_geomap: load cluster popups via template. Disable google geo lookups for half an hour if quota exceeded. Cleanup of some js code. Perform geo lookups in same process as pivot, prevents too many parallel lookups when re-pivoting.