CHANGELOG entry for improved singularizing of singulars.

Closes #9559.

The actual patch was added with #4719
Fix ActiveRecord `subclass_from_attrs` when eager_load is false.
It cannot find subclass because all classes are loaded automatically
when it needs.
Merge pull request #9581 from senny/9559_changelog_singularizing_singular

CHANGELOG entry for improved singularizing of singulars.
Typo in comment to ActionView::Resolver#find_all
Merge pull request #9585 from RKushnir/patch-1

Typo in comment to ActionView::Resolver#find_all
Merge pull request #9507 from senny/9483_migrations_without_transactions

Transactions can be turned off per Migration
`Connection#structure_dump` is no longer used. #9518

As of ccc6910c we use `mysqldump` to create the `structure.sql`.
The old `#structure_dump` code is still in AR but never used.

I removed all relevant parts from the code-base.
rake db:structure:dump warns when `mysqldump` is not in PATH.

Closes #9518.

The rake task used to fail silently and left an empty `structure.sql`.
It's confusing for users to get to the root of the problem.
The warning message tells them where to look.
Merge pull request #9538 from senny/remove_structure_dump

`Connection#structure_dump` is no longer used
Change useless tr to gsub
Update capture_helper.rb

if there's content for the right column, then we need the two-column class, if not the one-column
Merge pull request #9586 from robertomiranda/useless_tr

Change useless tr to gsub
debugger 1.4.0 works in Ruby 2.0
Use the instrumentation framework to instrument Strong Params
Remove regression test added in 0268b5d8cdc3c5a1337462135f0a326a2654ba1a

It was added because a regression caused by a712e08ebe21f6d8653a0e6602df2e0f5d40d9ca

Closes #9255
replace non-breaking spaces with normal spaces [ci skip]
Refactored and removed unnecessary lines in the test case
Merge pull request #9596 from choudhuryanupam/master

Refactored the code to remove irrelevant lines
Merge pull request #9595 from senny/remove_non_breaking_spaces

replace non-breaking spaces with normal spaces [ci skip]
Merge pull request #9545 from senny/9535_secure_password_blank

`has_secure_password` is not invalid when assigning empty Strings