help: don't search randomly for help data - trust util.datapath
The search was introduced in c904e76e3834 without a convincing explanation why
it should be necessary ... except for consistency with templater handling.
Now, just keep it simple.
templater: don't search randomly for templates - trust util.datapath
The search was introduced in 2653740d8118. It might have been necessary back
then when using __file__ directly and frozen-ness wasn't considered. Now we
should know exactly where the templates can be found.