Provide shareable make targets and rake tasks for extracting translations
All translated hammer plugins contain a copy Makefile and rake tasks for extracting translations. When there's a change in the extraction procedure forced by change in any of the tools we depend on, every plugin must update the Makefile, which isn't very efficient. It's sometimes also quite difficult to spot that something went wrong with translations after upgrade of the tools. As a result many plugins contain outdated Makefiles that produce wrong .po files.
Hammer should provide shareable make targets and rake tasks for extracting translations to avoid the overhead with updating it in all plugins when something changes.