Release 7.4.0: New column supported_capabilities for folders

[Guest]

Therefore, a new property named supported_capabilities, column ID 317, is introduced for folders in the HTTP API. To avoid interference with the existing bitmask field capabilities specific to mail folders, the supported_capabilities is only used for non-mail folders.

The value of the supported_capabilities property is encoded as an array of strings. Currently, the following constants are used:
PERMISSIONS, PUBLICATION, QUOTA, SORT, SUBSCRIPTION