Index IX_contactgroups_user_id was created on the wrong table.
Remove new_link argument usage, we don't need it anymore
Remove deprecated function usage (get_table_name)
Describe the installation of 3rd party libs through composer
Don't init output in CLI mode

Fixes infinite recurssion on raise_error() call when executing scripts
out of the INSTALL_PATH. Also use 'rcube' if 'rcmail' is not needed.
Print to STDERR non-terminating errors in CLI mode
Also remove cloned search item from treelist
Make LDAP extension and Net_LDAP3 lib optional in installer check
Remove obsolete code which is executed in rcmail_output_html::frame()
Merge pull request #216 from MarcoMiltenburg/20140905-index-on-contactgroups

Index IX_contactgroups_user_id was created on the wrong table.
Fix validation of email addresses with IDNA domains (#1490067)
Access list body through abstract property
Avoid errors when contacts widget is missing (in derived skins for example)
Make noshow attribute for roundcube:label tags actually work as supposed
Fix splitter code to properly work with 1px size borders