Fix bug where empty paragraphs skipped over (BL-10058)
Fix bug where empty paragraphs skipped over (BL-10058)

Deleting one empty paragraph would delete all contiguous empty paragraphs. Arrow navigating over one would navigate over all contiguous empty paragraphs. Now this is fixed (by not using display:none on the br elements)
BloomBooks/BloomDesktop,StephenMcConnel/BloomDesktop,gmartin7/myBloomFork,StephenMcConnel/BloomDesktop,BloomBooks/BloomDesktop,BloomBooks/BloomDesktop,gmartin7/myBloomFork,gmartin7/myBloomFork,StephenMcConnel/BloomDesktop,StephenMcConnel/BloomDesktop,BloomBooks/BloomDesktop,BloomBooks/BloomDesktop,gmartin7/myBloomFork,BloomBooks/BloomDesktop,StephenMcConnel/BloomDesktop,gmartin7/myBloomFork,StephenMcConnel/BloomDesktop,gmartin7/myBloomFork