Automatically created users cannot be deleted

i'm using leap_cli:develop and leap_platform:develop to set up a single mx node, without any further provider modifications. leap test creates a user, but cannot delete it:

--- leap-platform-staging/config ‹staging› » leap_develop test                                                                                                                  
 = [staging.dev.wazokazi.is] PASS: Network > Can connect to internet?
 = [staging.dev.wazokazi.is] PASS: Network > Is stunnel running?
 = [staging.dev.wazokazi.is] PASS: Network > Is shorewall running?
 = [staging.dev.wazokazi.is] PASS: CouchDB > Are daemons running?
 = [staging.dev.wazokazi.is] PASS: CouchDB > Is CouchDB running?
 = [staging.dev.wazokazi.is] PASS: CouchDB > Is cluster membership ok?
 = [staging.dev.wazokazi.is] PASS: CouchDB > Are configured nodes online?
 = [staging.dev.wazokazi.is] PASS: CouchDB > Do ACL users exist?
 = [staging.dev.wazokazi.is] PASS: CouchDB > Do required databases exist?
 = [staging.dev.wazokazi.is] PASS: CouchDB > Can records be created?
 = [staging.dev.wazokazi.is] PASS: Mx > Can contact couchdb?
 = [staging.dev.wazokazi.is] PASS: Mx > Can contact couchdb via haproxy?
 = [staging.dev.wazokazi.is] PASS: Mx > Are MX daemons running?
 = [staging.dev.wazokazi.is] PASS: Webapp > Can contact couchdb?
 = [staging.dev.wazokazi.is] PASS: Webapp > Can contact couchdb via haproxy?
 = [staging.dev.wazokazi.is] PASS: Webapp > Are daemons running?
 = [staging.dev.wazokazi.is] PASS: Webapp > Can access webapp?
 = [staging.dev.wazokazi.is] PASS: Webapp > Can create user?
 = [staging.dev.wazokazi.is] PASS: Webapp > Can authenticate?
 = [staging.dev.wazokazi.is] SKIP: Webapp > Can delete user? [webapp.rb:94]:
 = [staging.dev.wazokazi.is]   It appears the web api is too old to support deleting users
 = [staging.dev.wazokazi.is] 20 tests: 19 passes, 1 skips, 0 warnings, 0 failures, 0 errors

It's because by default the master branch of leap_web is checked out. Shouldn't we configure the webapp to use develop branch, if leap_platform:develop and/or leap_cli:develop is used ? What do we do at release ? Is there a leap_web release coming up ?

(from redmine: created on 2014-11-24, closed on 2014-11-24, relates #5238 (closed), relates #6311)