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
Removed hard coded message strings from scripts and moved them to the language file.
Fixed a display bug in multimenu field.
Removed rounded help buttons from fields, made the fields use html title to
display the descriptions instead.