Fix inadvertent body truncation when loading files with extra newlines

Pretty trivial. Had to wait for the merge of the UI enhancements by @traeblain.

The basic idea is that the current implementation assumes that ```'\n\n'``` occurs only between the header and the content. But if you deposit existing content that was authored in a posix environment, the paragraphs will be separated by newlines instead of carriage return/newline combinations. The result is truncation during the loading of such content.