#1069282 by imonemus. Filenames "append timestamp" corruption with multiple schedules per cron run (using one profile)

#1037230 - Strict warning for backup_settings_form_validate and backup_settings_form_submit
Other ui cleanup

#956228 Backing up results in: Warning: is_dir(): Unable to find the wrapper "private"
#990954 by gaelicWizard. Use DRUPAL_ROOT constant
#827378 Default directory with preceeding slash fails

#846434 by VladRM, tim.plunkett and JeremyFrench. Add .gz, .zip, and .sql as valid file extensions
#900090 file_directory_path() has been removed. Another example found by tim.plunkett

#689532 Moved the ui from the content section to the structure section to prevent the new D7UX stuff from eating the module