Issue 3700: Auto-completion for HTML attributes

https://code.google.com/p/fbug/issues/detail?id=3700
Fix auto-completion of "alignment-baseline"
Issue 6854: Auto-complete SVG attributes (part 1: regular attributes)

https://code.google.com/p/fbug/issues/detail?id=6854
Issue 6854: Auto-complete SVG attributes (part 2: presentational attributes)

https://code.google.com/p/fbug/issues/detail?id=6854
Issue 4458: Jumping back to the property name while the property value editor is empty doesn't work

https://code.google.com/p/fbug/issues/detail?id=4458
Issue 6854: Auto-complete SVG attributes (part 3: remove attributes unsupported in Firefox)

https://code.google.com/p/fbug/issues/detail?id=6854
Issue 6814: Auto-complete CSS styles within the HTML "style" attribute

https://code.google.com/p/fbug/issues/detail?id=6814
FBTest for issue 3700 (Add auto-completion for HTML attributes)

https://code.google.com/p/fbug/issues/detail?id=3700
Address some review comments
Move HTML data into a separate module
Merge branch 'html-completion'