Bug fixes and feature requests:

- Added display for "place in line" when viewing holds
- Reworked "place hold" factory to check for age-protected
  items which may not be available for pickup, so patrons can
  hold the item anyhow.
- Changed login function to use POST instead of GET
- Changed wording on library card display to indicate that all
  locations now support scanning barcodes from mobile device
  displays.
- Adjusted version strings for iOS release

Signed-off-by: William Rockwood <wrockwood@tadl.org>