Version bump to 0.24.2.pre
Slight refactoring of the design section and variable reorder method
More refactoring for design section and option reorder methods
JavaScript refactoring for desing section and option reorder methods
Uploaded file storage locations updated
Slight refactoring of `SheetVariable` model
Added missing test file for section images
Removed unused `remove_file` action from `SheetsController`
Removed unused `remove_file` action from `ProjectsController`
Removed unused sheet partial
Ignore most test support folders
Version 0.24.2 finalized