Formats values in InputfieldPageAutocomplete and ProcessPageSearch

[esrch]

When displaying dates in an Autocomplete field, the displayed date is a timestamp. The same is true for values coming from ProcessPageSearch (and thus being displayed during a search by an Autocomplete field). This pull request formats these values to make them readable.

[ryancramerdesign]

I think we'll run into double entity encoding and some fields with obvious encoded HTML and such, so not sure we can take this approach. Dates are kind of an exception since their unformatted value is pretty useless for any kind of selection purposes. I think some more on how we might best handle it.

[esrch]

In which cases would we run in double entity encoding for example (not trying to argue, just trying to understand, so that I can maybe help solve the problem, since I really need to be able to do this :-) ).