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