Cleanup for PermissionUtil and fixed user_limit check. (#324) * Cleanup for PermissionUtil and fixed user_limit check. * Fixed a bug in ChannelUpdateHandler that removed all overrides (wrong id) (commit: 319aae5)
MessagePaginationAction and some adjustments to MessageHistory (#343) * Added MessagePaginationAction and made some adjustments to MessageHistory for "efficiency" * Removed exception printing for removeShutdownHook to prevent IllegalStateException on shutdown by removing hook while jvm shutdown in process * Make PaginationAction entity cache opt-out * Made new PaginationIterator implementation start off with already cached entities (commit: fc0bc56)