Issue #1257326 by drozas: Added translations directory and .es.po to have automatic translation into Spanish.

Issue #1257326 by attiks: Applied patch i1257326.patch with some code correction and better use of the t() function by attiks.

Issue #1257326 by drozas: Changes in description of the field Height on the first Configuration Example

Issue #1257326 by drozas: All variables are now sanitized in hook_block(). Readme file extended with some configuration examples