[router] add prepare and databases script_builder middlewares
remove unused fetch middlewares in worker, move upload_sh_command to common, assign ip to vagrant
remove branches from travis
[worker] fixes local runner
fixes specs
add after_script to perfrom_job message and script_builder, add webdav_cache middleware to router
[worker] remove docker_webdav_cache, add after_script support
remove sha, src, deploy_key from perform_job_message, cleanup worker
fixes router spec
Merge branch 'router_prepare'