remove branching logic from calls to find_nth
only add the offset and index when we need to
don't bother with an offset if the offset is zero

we're guaranteed to pass a numeric value for offset, so if it's zero,
just don't add an offset to the query
Bundle tzinfo-data on :x64_mingw (64-bit Ruby on Windows).
Merge pull request #14720 from philr/tzinfo_data_x64_mingw

Bundle tzinfo-data on :x64_mingw (64-bit Ruby on Windows).
Fix a few typos [ci skip]

This is a follow up to 545afc15.
Missing 'are' in note - [ci skip]

This is in the note at the end of Section 2: Controller Naming Convention.  [ci skip]
Merge pull request #14725 from afshinator/patch-1

Missing 'are' in note - [ci skip]
Update documentation to use Rails.application instead

References to ``AppName::Application` removed in favour of Rails.application
as generated with a new rails app

[ci skip]