Add a bundle task to create a doc bundle (html/pdf/epub)

Makefile

@@ -128,10 +128,10 @@ devhelp:
 	@echo "# devhelp"
 
 epub: fetchtranslations
+	#TODO delete the cp below when doc publishing no longer needs it. Because epub should depend on html
 	@$(foreach TRANSLATION,$(TRANSLATIONS), \
 		$(SPHINXBUILD) -a -D language=$(TRANSLATION) -b epub $(ALLSPHINXOPTS) $(BUILDDIR)/epub/$(TRANSLATION)/$(MAHARA); \
 		cp $(BUILDDIR)/epub/$(TRANSLATION)/$(MAHARA)/Mahara.epub $(BUILDDIR)/html/$(TRANSLATION)/$(MAHARA)/Mahara.epub; \
-		rm -r $(BUILDDIR)/epub/$(TRANSLATION)/$(MAHARA)/; \
 		echo "---------------"; \
 	)
 	@echo
@@ -191,3 +191,12 @@ doctest:
 	$(SPHINXBUILD) -b doctest $(ALLSPHINXOPTS) $(BUILDDIR)/doctest
 	@echo "Testing of doctests in the sources finished, look at the " \
 	      "results in $(BUILDDIR)/doctest/output.txt."
+
+bundle: html latexpdf epub
+	@$(foreach TRANSLATION,$(TRANSLATIONS), \
+		cp $(BUILDDIR)/latex/$(TRANSLATION)/$(MAHARA)/Mahara.pdf $(BUILDDIR)/html/$(TRANSLATION)/$(MAHARA)/Mahara.pdf; \
+		cp $(BUILDDIR)/epub/$(TRANSLATION)/$(MAHARA)/Mahara.epub $(BUILDDIR)/html/$(TRANSLATION)/$(MAHARA)/Mahara.epub; \
+	)
+	@tar -czf $(BUILDDIR)/mahara-manual$(MAHARA).tar.gz -C $(BUILDDIR)/html $(TRANSLATIONS)
+	@echo
+	@echo "Created bundle: $(BUILDDIR)/mahara-manual$(MAHARA).tar.gz"