Author: Shamim Rezaie
MDL-72557 tool_usertours: Allow customisation of the end tour button
http://git.moodle.org/gw?p=moodle.git;a=commit;h=912a580546f6e02118bb3d5f36c9d33a2ec8a513
http://github.com/moodle/moodle/commit/912a580546f6e02118bb3d5f36c9d33a2ec8a513
+ 4.0 en [endtourlabel,tool_usertours]
+ 4.0 en [endtourlabel_help,tool_usertours]