WebSearch: nicer browsing of fuzzy indexes

* Adds a quick link to possibly switch to exact author browse
  while browsing in fuzzy author indexes.  (closes #1348)

Reviewed-by: Tibor Simko <tibor.simko@cern.ch>
Merge branch 'maint-1.1'

* maint-1.1:
  WebSearch: nicer browsing of fuzzy indexes

Conflicts:
	modules/websearch/lib/search_engine.py
	modules/websearch/lib/websearch_regression_tests.py
Merge branch 'master' into next

* master:
  WebSearch: nicer browsing of fuzzy indexes
WebStyle: fix response headers

* Fixes problems with 'content-type', 'content-length' and
  'content-disposition' in SimulatedModPythonRequest object.
  (closes #1351)

Reported-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
Reviewed-by: Tibor Simko <tibor.simko@cern.ch>