Merge pull request #309 in ZP/z-push from...

Merge pull request #309 in ZP/z-push from bugfix/ZP-989-remove-readonly-flag-from-configuration to develop

* commit '5fbc857e':
  ZP-989 remove obsolete comments.

src/config.php

@@ -353,11 +353,6 @@
  *  - all Z-Push users must have at least reading permissions so the configured
  *    folders can be synchronized to the mobile. Else they are ignored.
  *
- *  - if read-only is set to 'false' only users with full permissions (secretary
- *    rights) are able to change entries. For all others, the changes will be
- *    discarted and overwritten with data from the server. Check backend
- *    compatibility and configuration for this feature.
- *
  *  - this feature is only partly suitable for multi-tenancy environments,
  *    as ALL users from ALL tenents need access to the configured store & folder.
  *    When configuring a public folder, this will cause problems, as each user has