datasync 6.x-1.0-beta3

Changes since DRUPAL-6--1-0-BETA2:

• - Add datasync_callfunc to be able to add any function as a job (like job queue module)
  - Change datasync_cronalt to extend datasync_callfunc
  - Minor bugfix in datasync_cronalt.module to adjust to change from datasync_scheduler bugfix
• #665908 Pass URL through url() to get form action. thanks mmilo
• typo that prevents correct message when views module is not enabled
• some little changes to make the settings screen more understandable when no job types are enabled
• add messages to datasync_scheduler when there are no job schedules/timeouts