Issue #221 by agreazel: Use Backdrop branding for the installer.
Issue #1841900 by olli, herom, Sheldon Rampton: Node deletion should clear page cache.
Issue #179: Convert regional settings to configuration system.
Issue #179: Convert regional settings to configuration system, part 2. Consolidating configuration screens and config files.
Merge pull request #404 from quicksketch/hellomrcat-cmi-date

Issue #1571632: Convert regional settings to configuration system.
Merge pull request #401 from hellomrcat/d7-cache

Issue #1841900 by olli, herom, Sheldon Rampton: Node deletion should clear page cache.
Merge branch '221-installer-branding' of https://github.com/jenlampton/backdrop into jenlampton-221-installer-branding
Issue #221 by agreazel: Minor margin and field adjustments on the installer.
Issue #278: Remove support for SQLite.
Issue #279: Remove support for PostgreSQL.