[doxygen] Enable client side searching.

cf. FS#273
(reviewed martinb)


git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@15046 2fb0f335-1f38-0410-981e-8018bf24f1b0

doc/doxygen/Doxylocal

@@ -18,3 +18,7 @@ EXAMPLE_PATH          += @srcdir@/extradoc
 IMAGE_PATH             = @srcdir@/images
 
 EXTRA_PACKAGES        += amsmath,amssymb
+
+# enable client side searching
+SEARCHENGINE           = YES
+SERVER_BASED_SEARCH    = NO