User friendly improvements for Units of Measure.

• Allow all details on existing unit of measure to be modified
• On view/change part, show and allow user to modify unit retail price

User friendly improvements for upgrading c9. From now on (not this version but the next), c9 will give users 24 hour grace for applying updates on all terminals. So if you are in the middle of work and open a new terminal and someone else in the shop has checked for updates, your system will not be forced to upgrade. You will have option to delay the application of the upgrade. The option to delay is only given for 24 hours. The following day c9 will unconditionally update.

Bugfix with Invoice PDF importing, would not decode quotes (") in PDF files correctly messing up ability to decode entire PDF. Now Fixed. Also included support for Husky Power equipment invoice importing.