add prompt to 422 page to check logs
Merge pull request #9537 from NARKOZ/patch-6

add prompt to 422 page to check logs
Use 1.9 hash style in changelog and doc examples [ci skip]
Remove .all usage from unscope doc examples [ci skip]
Fix formats on xhr requests when HTTP_ACCEPT is empty string

Fix ActionDispatch::Request#formats on xhr requests when HTTP_ACCEPT
header is empty string. About issue #7774, same fix as in commit bebb02f
but for xhr requests.
Fixed typo in active record's changelog
Merge pull request #9540 from dimko/patch-1

Fixed typo in active record's changelog
Merge pull request #9541 from maximerety/fix_7774

Fix formats on xhr requests when HTTP_ACCEPT is empty string