Add ability to import and export Jobs

• Download all Jobs with their Triggers as JSON.
• Import Jobs from JSON.
• Use start/resume button in Trigger UI to get out of ERROR state.

1.35

Remove accidental files

1.34: Bintray Travis CI publisher is terrible

"regexes" have no rhyme or reason

1.33

Change admin-trusty to admin

1.32

Fix upload pattern

1.31

Fix apt pool location

1.30: Use ASM bytecode generation rather than javac

The classpath wasn't being determined correctly

1.29

Cross-build for Upstart (trusty) and Systemd (xenial)

1.28: Fix /var/run/piezo-admin creation

Already done in Upstart script

1.27

Deb installation instructions