Actions API :: Don't use names.Tag over the wire

 - Tags on the wire should be strings, per fwereade
Review feedback fixes
lp-1395331: fix backup plugin.
Merge pull request #1217 from ericsnowcurrently/backups-fix-plugin

lp-1395331: fix backup plugin.



(Review request: http://reviews.vapour.ws/r/526/)
Merge pull request #1211 from johnweldon/1-action-api-updates

Actions API :: Don't use names.Tag over the wire

 - Tags on the wire should be strings, per fwereade

(Review request: http://reviews.vapour.ws/r/521/)