Merge pull request #182 from Annotum/textorum/references-output

Prevent PHP Notice, pass the proper parameter into anno_xml_references
Add dummy element to lists if they are void of text (i.e. bookmark element)
Remove one step of inserting dummy element
Whitespace
Merge pull request #183 from Annotum/textorum/list-tweaks

Textorum/list tweaks
Split paragraphs and titles on new paragraphs
Tweaks to pasting
Allow BRs to create new paragraphs, wrap inline siblings in this paragraph
Cleanup