Made the root bundle node be expanded whenever a new bundle is loaded on MainForm.LoadBundle()
Updated ChangeLog with root bundle node expand change
Added initializer for the FilterStore.filterPresets field on FilterStore.InitList()
Made changes to the icons of the form's controls so they use the resource images instead of using independent image resources
Fixed bound checks on PerPixelUndoTask.IndexOfPixel() by subtracting 1 from f's value and using 'c <= f' as the loop condition