MuleCE container profile and quickstart

    A Mule Community Edition 'process' container profile
    and a 'hello world' Mule http handler quickstart.
add helper script to delete docker containers for CI jobs
Added default perm gen and min/max settings for jvm, fixes #2229
#2237: Output karaf version we use now.
Add icon for LiveOak profile
#2104 create a maven-plugin to generate swagger API docs.json for swagger enabled rest endpoint
#2104 fix pom.xml
remove hardcoded SNAPSHOT version in startup.properties
Updated maven-bundle-summary-plugin. Attaching reports to Maven artifacts
Remove snapshots mule snapshots repo entry

    Remove bad pom entries added by mule developer tools
    including:

    * Mule snapshots repo

    * Redundant maven central entry.

    Fix typo in comment.