WebComment: escape review "title"

* Escape title of a review when displaying, including when showing
  the review form with some initial value.

Reported-by: Friedrich Hust <Friedrich.Hust@rwth-aachen.de>
Reviewed-by: Tibor Simko <tibor.simko@cern.ch>
BibClassify: escape keywords in tag cloud and MARCXML

* Escape keywords in HTML output (tag cloud), as well as
  MARCXML output.

Reported-by: Friedrich Hust <Friedrich.Hust@rwth-aachen.de>
Reviewed-by: Tibor Simko <tibor.simko@cern.ch>
Merge branch 'maint-0.99' into maint-1.0

* maint-0.99:
  BibClassify: escape keywords in tag cloud and MARCXML
  WebComment: escape review "title"

Conflicts:
	modules/bibclassify/lib/bibclassifylib.py
	modules/webcomment/lib/webcomment_templates.py