Log Message:
Updated chat/ejabberd to 2.1.4.

Short list of changes:
* Bounce messages when closing c2s session
* Bugfixes when handling Service Discovery to contacts
* Don't send error stanza as reply to error stanza
* Don't store blocked messages in offline queue
* Extauth: Optionally cache extauth users in mnesia
* Full support for XEP-0115 Entity Capabilities v1.5
* HTTP-Bind (BOSH): Remove unneeded 100 ms delay, and export functions
  to facilitate prebinding methods
* LDAP: Inband password change, Extensible match support,
  and ldap_tls_verify.
* Localization: Updated most translations
* MUC: Refactor code to reduce calls to get_affiliation and get_role
* ODBC: Add created_at column also to PostgreSQL schema
* PAM: New option pam_userinfotype to provide username or JID
* Pubsub: Send created node notifications. Enforce
  pubsub#presence_based_delivery, pubsub#show_values
* Vcard: Automatic vcard avatar addition in presence
* WebAdmin: New Access rule webadmin_view for read-only