Highlights and removes disallowed elements (empty paragraph and
consecutive br's)
empyparagraph-plugin: Fix documentation
emptyparagraph-plugin: add jsdoc to functions, and removed unused variables.
emptyparagraph-plugin: checks if parentNode exists when removing a node.
Merge pull request #1171 from najor/dev-kb1479-remove-empty-paragraph

Highlights and removes disallowed elements (empty paragraph and