Fix issue #602 -- confusing browser cache behavior

Make the "Back to Page View" link from the QSD edit page trigger a
window.location.reload(true) on the QSD page, which forces a reload
from the server. This should properly fix the problem of successive
QSD edits clobbering each other due to browser caching.
Merge pull request #626 from luac/lua-issue-602

Fix issue #602 -- confusing browser cache behavior