Closes GH-2481 Moved RDBMS gems into groups that can be used in Bundler 'without' arguments.
Merge remote-tracking branch 'ratmav/master'
Alias the :postgres group to :postgresql too.
Bump selenium-webdriver ~> 2.38.
Merge pull request #2493 from simi/patch-3

Bump selenium-webdriver ~> 2.38.0.
Add missing '[' to changelog.
Update installer.rb

[ci skip]
Merge pull request #2496 from simi/patch-3

Update installer.rb
Revert "Removed custom_slug and cache_pages_backend."

This reverts commit 161e30143aace8a8d3cc6babbbd96f0b57c8d4be.

Conflicts:
	pages/app/models/refinery/page.rb
Revert "Use menu_title_or_title method where appropriate."

This reverts commit 55bd704f415ee7027b797ce6dbf79d695905e869.
Don't cache admin pages records.
Merge pull request #2498 from zizkovrb/make-Xanders-happy-again

Revert "Removed custom_slug and cache_pages_backend."
String is enough for Refinery.roots parameter.
Merge pull request #2499 from zizkovrb/roots-to-s

String is enough for Refinery.roots parameter.
Fix random failing Resource config spec.
Merge pull request #2502 from zizkovrb/fix-random-order-resource-spec

Fix random failing Resource config spec.
Remove carriage return from NOTE to fix its display.
Shelly Cloud installation guide

Shelly Cloud guide: error correction, polishing

Shelly Cloud guide: remove br tags, fix Step 13 link

Shelly Cloud guide: replace html #, clarifications

Shelly Cloud guide: make it more neutral
Merge pull request #2503 from szymonpk/master

Refinery installation on Shelly Cloud platform
Fixed some of the formatting in the Shelly Cloud guide.