make default saved reports url prettier

(don't think we really care about stale bookmarks, tell me if I'm wrong)
add redirect
remove .gitignore in preparation for merge
subtree merged in core-hq (meaningless-url-change branch)
Merge branch 'master' into core-hq-meaningless-url-change
Merge pull request #208 from dimagi/core-hq-meaningless-url-change

Core hq meaningless url change