EComposerPrivate: Check for links and do spell check when pasting HTML
Show star instead of bullet in Bulleted list in plain text mode

Switch between bullets and stars when changing composer mode.
EEditorWidget: Process lists when sending plain text message
EEditorWidget: Remove zero width space safely to avoid caret restoration at wrong position

When removing zero width space character from the beginning of word use
webkit_dom_character_data_replace_data instead of modifying node's text
content.