Migration to Dragonfly ~> 1.0.0.
Removes protected_attributes from Gemfile in edge template

Fixes #2532
Make it easier to override allowed params when starting to create new page.
set the locale for url when adding page links
change regex in wymeditor to match hyphenated locales
Save Page view_template attribute, and also use it in page preview mode
Merge pull request #2537 from srgpqt/master

Save Page view_template attribute, and also use it in page preview mode
Add layout_template to permitted attributes.
Tell friendly_id to regenerate slug if title has changed.

This is due change in friendly_id 5.0.x where it doesn’t regenerate
slug when record is updated.
Fixes #2539 by checking if extension was specifically supplied as an option.
Merge pull request #2538 from refinery/regenerate_slug

Tell friendly_id to regenerate slug if title has changed.
Merge pull request #2500 from zizkovrb/draconfly-1

Migration to Dragonfly ~> 1.0.0.
Added additional needed line, clarified variable
Merge pull request #2540 from refinery/fix-issue-2539

Fixes #2539 by checking if extension was specifically supplied as an option
Remove redundant translations from core locales.
Remove redundant and fix existing translations in authentication locales.
Move one of the ru dashboard translation under proper section.
Remove redundant and fix existing it images translations.
Remove redundant translations from page locales.
Remove redundant and fix existing resource translations.