Add support for serving a Unique Room Name (thanks to Pablo Polvorin)(EJAB-1121)

SVN Revision: 2802
Added to ejabberdctl an experimental variable EJABBERD_BYPASS_WARNINGS

SVN Revision: 2804
Print command's reply and newline only when there's something to print.

SVN Revision: 2806
Prepare 2.1.1 release

SVN Revision: 2808
Update branch version name back to 2.1.x

SVN Revision: 2810
Fix get_group_opt to return Default value in case of Mnesia error.

SVN Revision: 2811
Fix EDoc comment

SVN Revision: 2814
pep_mapping not working due to Node type mismatch (EJAB-1135)

SVN Revision: 2815
Remove the old note about LDAP lack of encryption.

SVN Revision: 2817
Clarify that 'tls' option is still useful in ejabberd_http for HTTPS.

SVN Revision: 2819
Recompile all translation files

SVN Revision: 2821
Improved Polish translation (thanks to Janusz B. Wiśniewski and Zbigniew Żółkiewski)(EJAB-1138)

SVN Revision: 2822
Fix error message when register is forbidden by ACL (EJAB-803)

SVN Revision: 2823
Add explanation about global Access precendence over vhost Access (EJAB-803)

SVN Revision: 2824
Support for arguments in ejabberdctl that are empty strings.

SVN Revision: 2827
Better use install_fallback when importing a Mnesia backup file.

SVN Revision: 2829
Provide more detailed log message when s2s stream start fails.

SVN Revision: 2831
Send features after negotiating binding and session (EJAB-1058)

SVN Revision: 2834
Write in room log when a room is created, destroyed, started, stopped (EJAB-1144)

SVN Revision: 2836
Disable code of recent commit because some clients can't handle it (EJAB-1058)

SVN Revision: 2838