#3166 Adds helper variable for Shipment Form Prevent Old People Submit
Adds dosomething_campaign_get_campaign_gallery and campaign_gallery theme function
Adds paraneue campaign-gallery tpl
Adds unpublished class/title based on campaign status
Cleanup path variables, avoid entity wrapper
Use campaign-gallery template for Campaign Group tpl
Merge pull request #3178 from aaronschachter/campaign_gallery

Campaign gallery
Removes unnecessary dosomething_campaign_group_get_campaigns function, replaced by get_campaign_gallery
Merge pull request #3179 from aaronschachter/cleanup

Campaign Group cleanup
Adds subtitle, cover image to cause, issue, action type
Refs #3159 - Begins taxonomy term tpl
Output subtitle field markup, add banner to tpl
Dont render header variable for taxonomy term
Adds cover image inline css
Merge pull request #3180 from aaronschachter/term_fields

Taxonomy fields: Subtitle and Cover Image
Merge pull request #3167 from aaronschachter/3166-old-ppl

Shipment Form - Conditionally prevent Old People from submitting
Merge pull request #3181 from aaronschachter/term_tpl

Taxonomy term template
Fix release v0.3.51.
Merge pull request #3182 from sergii-tkachenko/fix-v0.3.51

Fix release v0.3.51.
Adds new full width page tpl to DRY