Call strip on thumbnails to reduce their size.
Use options for thumbnails.
Update changelog.
Remove marketable_urls check from find_by_path_or_id.

When marketable_urls is false and only the path is passed, then neither
find_by_path nor find is triggered (ht @renechz).
Remove _locale_picker partial from engine template.

It is available as shared partial - render
"/refinery/admin/locale_picker".
Added deprecation time frame and changelog.
Fix bug where user plugin order is reset each time user gets updated.
require a unique page part title scoped to this page only
fixes validation on the UI when creating a new page part with the same name as an existing part.
Made spec wording read as truthy.
Add note to changelog about #2282.
Reduce maintenance headache by allowing failures on rbx-19mode and jruby-19mode.
Merge pull request #2283 from refinery/allow_failures

Reduce maintenance headache by allowing failures on rbx-19mode and jruby-19mode.
Require at least Ruby 1.9.3 and thus drop Ruby 1.8.x support.
Remove all 1.8 modes from CI.
Document #2277 in changelog
Merge pull request #2278 from refinery/issue_2192

Remove marketable_urls check from find_by_path_or_id.
Merge pull request #2281 from refinery/issue_2173

Fix bug where user plugin order is reset each time user gets updated.
Add note to changelog about #2278 and #2281.
Tiny update for Getting Started guide.