Implement the register function of OC\ContactsManager
$key is not needed for registering contactsmanager callbacks
Supply the contactsmanager object to the callbacks
camelCase vars in OC\ContactsManager
Merge branch 'master' into contactsmanager-register

Conflicts:
	lib/private/contactsmanager.php
Fix wrong var name
Merge branch 'master' into contactsmanager-register

Conflicts:
	lib/private/contactsmanager.php
no return on register and unregister
fix grammar
Added requiremin/requiremax fields for apps

Apps can now specify a minimum and maximum version of ownCloud in which
they are supported.
Adjust core apps to use "requiremin" instead of "require"

Also added a few missing authors.
reverts 188c543 and translates only mail
Merge pull request #8736 from owncloud/appinfo-newrequirefields

App info new fields "requiremin" and "requiremax"
Merge pull request #8740 from owncloud/l10n-forgotten-tags

reverts 188c543
forgotten infobox messages translations
Merge pull request #8744 from owncloud/l10n-whoops-user-ldap

forgotten infobox messages translations
Merge pull request #8136 from owncloud/contactsmanager-register

Implement the register function of OC\ContactsManager
Merge pull request #8713 from owncloud/typo-files-encr

fix grammar
[tx-robot] updated from transifex
Add a system for (re)movable mount points