Fix auto commit message day of the month.
New section on contribution to RoR.
sync.
Translate Action View Form Helpers, closes #30.
Minor refinements of AV Form Helpers
Remove a useless word.
Refinement of AV Form helper.
Update form output for 4.2.0.alpha.
Refine.
Fix indentation. [ci skip]
Update src.
Translate Rails application template, closes #54.
Sync src.
Update pg guide.
Update routing.md [zh-TW].
Update translation terms, now with li and 4 spaces indenet of description format.
init 4_2_release_notes
41 release note highlight section.
Translate 4.2 release notes based on 4.1 release notes.
Quick translate the 4.2 release notes.