fix webapp couchdb.yml to be couchdb.yml not couchdb.yml.webapp
fix function issues in webapp design documents

This change is a result of https://github.com/leapcode/leap_web/pull/133.
Both should be deployed at the same time to prevent conflicts.
load_design_documents.sh fails (Bug #4945)
configure leap_platform to install our leap bigcouch package (Feature #4971)
properly purge cloudant repository leftovers (#4971)
Merge branch 'feature/4971_install_leap_bigcouch_package' into develop
updated submodule couchdb
anonymize webapp ips (Bug #4896)
swiss privacy foundation changed their nameserver IPs: http://www.privacyfoundation.ch/de/service/server.html
add a .mailmap so authors show up with a unified name/email combination
Merge branch 'feature/4889_restrict_port_5984_proc_to_localhost' into develop
Merge branch 'develop' into 0.6