QmlJSEditor: Move reparse trigger to document

Change-Id: I65bb9002a44343bb1d13b9c5c92f5057c1d5b25e
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>
QmlJSEditor: Fix auto-indentation

Broke with 3ad38766112a6e0af67ad18c7244e251dc911f19

Change-Id: Id67e574b11e92d83124081f05262110033c8504e
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>
QmlJSEditor: Move semantic info updating to document

Change-Id: I804dbd887af1786e7554ec79f94fc8e59db1de5b
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>