Adds jquery ui autocomplete to tags field

navigation.js contains the method that's called when navigating to an
item. It applies an autocomplete to the supplied field with the supplied
source of entries (in the case of tagNames, it's a bootstrapped value).

inline_fields.js adds an extra line to the '.inline-edit' on blur
listener, which closes the autocomplete if it's open. It's added in this
file because this particular listener is a deferred listner and already
removes the blur listner when no longer needed.
New tags autotmatically added to clientside list