11 vacuum manuals added

11 more vacuum cleaner manuals and parts lists were added recently:

- Black & Decker: 1 vacuum manual
- Ewbank: 1 vacuum manual
- Hoover: 1 vacuum manual
- Minuteman: 1 vacuum manual
- Neato: 1 vacuum manual
- Oreck: 4 vacuum manuals, 1 vacuum parts list
- Prolux: 1 vacuum manual

Prolux vacuum cleaner manuals

User guides / instruction manuals:
- Prolux 6000 / 7000 Upright Vacuum
- Prolux 6000 / 7000 / 8000 / 9000 Upright Vacuum
- Prolux Central Vacuum
- Prolux FLIGHT-C Flight Handheld Vacuum Cleaner
- Prolux Ion Stick Vac
- Prolux Tritan