update packaging to use dh_sphinxdoc and dh_python2

requires search-html.patch to fix file so dh_sphinxdoc recognises it

debian/rules

@@ -12,7 +12,7 @@ export HOME=$(CURDIR)/build
 
 # Mega rule
 %:
-	dh $@ --buildsystem python_distutils
+	dh $@ --with python2,sphinxdoc --buildsystem python_distutils
 
 override_dh_clean:
 ifeq (,$(filter noclean,$(DEB_BUILD_OPTIONS)))
@@ -38,12 +38,6 @@ ifeq (,$(filter nodoc,$(DEB_BUILD_OPTIONS)))
 	export PYTHONPATH=$(PACKAGE_ROOT_DIR)/usr/lib/python$*/dist-packages; \
 	 cd doc; test -d build/html || $(MAKE) html
 	python$* setup.py install --install-layout=deb --root=$(PACKAGE_ROOT_DIR)
-	: # Use jquery and underscore from Debian package, so prune shipped one
-	-rm -f doc/build/html/_static/jquery.js
-	# Actually due to the problems with underscore pkg across releases just ship one for now
-	#-rm -f doc/build/html/_static/underscore.js
-	-rm -rf doc/build/html/_sources
-	-rm -f doc/build/html/.buildinfo
 endif
 
 ifeq (,$(filter nocheck,$(DEB_BUILD_OPTIONS)))