transfer error handler
Add theme type css class
Fix Rake tasks doc README: add top level h1

and link to missing to features.md.
[BUGFIX] Invalid branch in comparison
Merge pull request #8452 from dblessing/feature/theme_class

Add theme type css class
Merge pull request #8466 from cirosantilli/raketasks-doc

Fix Rake tasks doc README: add top level h1
Merge pull request #8469 from xperseguers/patch-1

[BUGFIX] Invalid branch in comparison
Merge pull request #8451 from skv-headless/transfer-error-handler

transfer error handler