Revert mule container version to 3.4.0

    Fixes #2669
Fixed profile images in docs. Improved FAQ about windows. And how to build the gitbook.
Add note about mule container version
Mule HelloWorld example documentation
Upgrade to spring boot 1.1.7
Add influxdb container service and influxdb metrics storage.
hawtio 1606: Add api to check if a profile exists without getting an exception.
#2457 removed old stuff
#2457 only use json files in the kubelet folder
#2678 first spike of a ProfileReplicationController; needs work ;)
#2457 moved to use kubelet folder for adding kubelet json files
upgraded to the latest hawtio
[ENTESB-2004] Use PublicPortMapper for io.fabric8.camel.FabricComponent
Fix dodgy div alignment
#2681: Fabric agent more fine grained provisioning status
#2681: Fabric agent more fine grained provisioning status
Try to fix weird render on website for articles
#2688: MavenDownloadProxyServlet should only use a maximum number of download threads to not overload the system in case of burst of download requests. The default value is 5 which can be configured using scr / config admin. And the idle threads will die, so if there is no demand for downloads the threads terminates.
#2672: Filter out master branch in git get versions.
closes #2387