This is implemented for most fields but not all. The reason is that there are
some fields for which this does not make sense because no entry is a valid entry.
The supported fields are:
checkbox
file
latlong
menu
number
picture
radio
text
textarea
url
The unsupported fields are:
date
multimenu
* image galery preset accessiblity fixes MDL-7822
* xhtml fixes
* fields now use s() and p() where needed
* added labels to all fields - imporved accessiblity for adding of new entries
* some other general bugfixing and cleanup
it is still not finished though, expect some more commits tomorrow