Determine how to add an appended string to a field in recadm forms

[dgets]

While it isn't a huge inconvenience, the dosage units should be appended not as a form field, but as a string at the end of the form field for the dosage amount. Not quite sure how to add a pseudo-static string like that, but I'm sure it won't be too tough.

[dgets]

This needs to be handled/handed off to the add_entry template, btw.

[dgets]

It's been advised on IRC #django that JavaScript be used for this particular portion, after the label is given some specific generic value in the ModelForm definition. It shouldn't take too much of a glance at the JS graphing script within the dataview app to figure out a good way to pass all of the sub.id and sub.units information to the JS. Then it's just a matter of detecting when anything new is selected from the substance list drop-down and changing the corresponding units label accordingly.