IDEA-123355 Postfix template expansions .null/.notnull after 'else' fail to provide a valid Java output

allow JavaWithIfExpressionSurrounder just after else keywords
(cherry picked from commit 2f3d180)
[r=anna]
WEB-11268 Live Templates in auto-completion interfere with Emmet/Zen expand

- disable autopopup in HTML
(cherry picked from commit 61bef59)
[r=ushakov]
Disable autopopup in Xhtml
(cherry picked from commit c96efa1)
[r=endal]