Update the filestore documentation for clear
[ci skip]
Add documentation for #clear on certain Store classes
[ci skip
Add documentation for FileStore#increment and #decrement
[ci skip]
Array#to_formatted_s does not call each element's to_s anymore

Array#to_s calls each element's inspect since ruby 1.9
Remove ambiguity with pluralizations and I18n keys used for association restrict_dependent_destroy errors
Using ruby 1.9 syntax [ci skip]
Rack Sendfile is coming as default now
Added Rack::Sendfile in rake about [ci skip]
Enhancing readability of options for delegate method
Merge branch 'master' of github.com:rails/docrails
Added some description to generate actionview gem [ci skip]
Fixed README link in API [ci skip]

This should not be a link because
it's creating a link with activesupport README right now
Guides fixed typo in index.html.erb file [ci skip]
New output for scaffold generate [ci skip]
grammar fix in upgrade documentation
Merge pull request #11465 from arunagw/removed_missleading_readme_link_doc

Fixed README link in API
Use latest mysql2.

Fixes #11457
Merge pull request #11485 from simi/mysql2

Use latest mysql2.
Merge pull request #11483 from garysweaver/grammar_fix_in_upgrade_documentation

grammar fix in upgrade documentation
fixes the test case of that plugins