Upgrade markdownj to 0.4
Support markup in job description
Add owasp html sanitizer and update codecs
Show option description with markup text
Update Option editor form

* use KO for preview
* apply bootstrap style
* todo: replace inline js with KO
Update job xml for descriptionFormat
Default configuration allows HTML in job descriptions

rundeck.security.job.description.allowHTML=true/false
Allow 'em'
i18nize opt edit gsp
Treat first line of job description as simple text
Job description help text, remove descriptionFormat
Remove descriptionFormat
Rename description template, change config property to

rundeck.gui.job.description.disableHTML
Add help text to option description textarea
Use CDATA for job description if multiple lines
Add documentation for job/option description HTML
Render multiline option description as CDATA section
Split simple/extended description on any kind of line ending
Fix broken jobXmlCodec test
Merge pull request #1030 from gschueler/feature/1020-job-option-description-html

Allow extended job/option descriptions rendered in Markdown for #1020