Hotfix 1.7.15h2

Fixed 2 bugs :

• Deleting a RenderNode should no longer forbid write access to the database
• Max IDs are now managed either in RAM and in database regarding to the stat dtatabase

1.7.15 hotfixed

Fixed 2 bugs :

• some DB chrases due to empty task_Nodes being created
• NoRenderNodeAvailable and NoLicenseAvailableForTask were raised but not catched

1.7.15

• Database is now split into two databases : one for production and one for statistics and archive considerations. More precisely :
  • Delete methods no more only set the archived flag to 1 but copy object and its hierarcy into another base, then deletes if compy did not failed
  • Archive methods no more only set the archived flag to 1 but copy object and its hierarcy into another base, then deletes if compy did not failed
  • All archive data may be moved form production base to database using the scripts/archive_migration.py script, given the database engine is MYISAM
  • New stat database has exact identical structure than the production one and has to be manullay created.