Adds confirmation to web link rows. Defaults to no warning.
Add documentation for web link confirmation parameters.
Merge branch 'refs/heads/master' into weblink-row-enhancement-confirmation

* refs/heads/master:
  use weakref to prevent leak
  UITextAlignment is deprecated in favor of NSTextAlignment
  Document all the new map row goodness.
  Select the annotation if the title is set.
  map_type is redundant since it's a hash of map properties.
  Overhaul the MapRow with lots of new options and working specs.
Update web link documentation to let the user know they can also use an NSURL.
Make row.warn a first-class property.
Update weblink row warning documentation.
Merge pull request #186 from markrickert/weblink-row-enhancement-confirmation

Weblink row enhancement confirmation