Implement "Change username" feature
feat(admin): allow admins to update user's items (restoring lost items,
granting quest scrolls, etc). @deilann :)
feat(dilatory): add dilatory achievement
remove beta from api call examples

The API documentation examples used beta.habitrpg.com as url. Additionally, the base URL was specified including "/user/". removed both to avoid confusion and make copy-paste easier
Merge pull request #3754 from vIiRuS/patch-3

remove beta from api call examples
Merge pull request #3597 from 3onyc/feature/username-change

Implement "Change username" feature
Fixed #3756?

It seems to be fixed, but I don't know the good development habits for
jade/whatever technology it is. Please comment & close if the fix is not
acceptable.
Merge pull request #3760 from Skyyrunner/develop

Fixed #3756?
Edit stripe cc subscriptions
Pin karma-mocha to 0.1.3, fixes CI
Merge branch 'thedavemarshall-update_billing_info' into develop
Exactly request karma-mocha 0.1.3, cause tilda was loading 0.1.6 on CI
feat(subscription): disable "update card" for paypal subscribers
Merge pull request #3769 from thedavemarshall/fix_ci_karma_deps

Pin karma-mocha to 0.1.3, fixes CI
chore(errors): allow disabling error emails (getting too many
VersionError, which maxes our limit and people can't use "Forgot
Password" feature)
feat(coupons): update wording @veeeeeee
tmp(coupons): just export c._id to csv
fix(coupons): fix to limit
bailey(mystery): july mystery item
feat(block-user): allow suspending user accounts (due to TOS violation or such) through Hall. @lemoness