Various display issues (help_text, classname, new_card_header_text, possibly others)

[coredumperror]

Due to the way that CondensedInlinePanel renders its form, the usual django help_text gets displayed over top of the inline panel code. The way InlinePanel usually works is to put the help_text to the right of the form UI, meaning the form needs to be shrunken horizontally a bit to fit the help_text.

In addition, the new_card_header_text and classname constructor args don't seem to be functional.

CondensedInlinePanel is such a great improvement over the default InlinePanel, so I really hope to see these fixes added soon. I may be able to provide a pull request to do this, but I don't currently have time to dedicate to learning the project well enough to do that.