slaprunner: secure access to cloud9 with nginx

Nginx is set in front of cloud9 running in local with https to secure its access
slaprunner: add .htpasswd file to resilient part of runner
slaprunner: launcher for nginx with ssl certificate, parameters for default sr, bug fix
slaprunner: fix hardcoded path in nginx_conf
slaprunner: fix https for cloud9

- Add patch to cloud9 to fix path used by polling request
- Add a node js simple http proxy to globaly access cloud9
- Add a frontend request to provide ipv4 access to cloud9
- Update nginx
python-openssl: include ssl librairies
slaprunner: add https to access slaprunner

slaprunner now run in local-ipv4 and is served by nginx which provide ssl
slaprunner: add missing egg lock-file
slaprunner: remove shacache in slaprunner

for the slaprunner branch and the purpose of development
slaprunner: fix link to http-proxy
slaprunner: add https to resiliency
slaprunner: improve https for resilient runner
slaprunner: re-add network cache
slaprunner: add md5sum
Merge branch 'master' into slaprunner