EHTMLEditorView - Generate new line into plain text version even when paragraph has no children
EHTMLEditorView - Replace 2+ spaces with non-breaking spaces and create anchors for links when processing data from convertor

When converting text we want to preserve spaces from original text. For this we
have to use the non-breaking spaces for it as two and more normal spaces is WebKit
replacing with just one. But we want the text from convertor to be wrapped
(non-breaking space is preventing from it) so we will replace 2+ spaces
with non-breaking spaces and leave the space of length one as it is.

Also when we are going through the text from the convertor we will
surround the links with anchor element to make them clickable.
EHTMLEditorView - Insert quote symbols before HTML element when it has no previous sibling

This fixes the situation when the paragraphs with just i.e. anchor were
not properly quoted.
EHTMLEditor - Process text in convertor when pasting plain text from clipboard