Add HTML5 color and date/time inputs

Fixed typo new_defautls -> new_defaults.

* Added tests for 'else' case in ActionView::Helpers::TranslationHelper#wrap_translate_defaults
* Also updated the testing syntax of translation.html_safe? asserts to provide better output upon failure.

This reverts commit d2901f0f, reversing
changes made to 525839fd.

Conflicts:
	activerecord/test/cases/connection_pool_test.rb

Reason: This change broke the build (http://travis-ci.org/#!/rails/rails/builds/1391490)
and we don't have any solution until now. I asked the author to try to
fix it and open a new pull request.

Move root method at TOP of routes file

Support migrating from Hash to HashWithIndifferentAccess for accessing attributes.

Made the change as per the following text in routing guide:-
"You should put the root route at the top of the file,
because it is the most popular route and should be matched first."

However, if root is best left at bottom. We will change to fix that text

In order to make migration from 3.x apps easier, we should try to
convert
Hash instances to HashWithIndifferentAccess, to allow accessing values
with both symbol and a string. This is follow up to changes in 3c0bf043.

refactor lazy_load_hooks load position, fix #6435

Use new hash syntax for generators gem method

The Gemfile of new application uses ruby 1.9 hashes. Gem method of
generators should use them too. It prevents from mixing two kinds of
syntax in one file.

remove useless require

Using require in development mode will prevent required files from
reloading, even if they're changed. In order to keep namespaced
application_controller reloadable, we need to use require_dependency
instead of require.

Rails db console improvements

Ruby tries to use '-h' as short version of '--header' by default
https://github.com/ruby/ruby/blob/trunk/lib/optparse.rb#L1372-1381.
To force `rails db -h` prints an usage message we should add the `-h`
options explicitly.

Rails uses sqlit3 db file with a path relative to the rails root. It
allows to execute server not from rails root only. For example you
can fire `./spec/dummy/script/rails s` to start dummy application
server if you develop some engine gem.

Now the `rails db` command uses relative paths also and you can explore
your dummy db via `./spec/dummy/script/rails db` command.

Restore frozen state on rollback, fixes #6417

#read_entry in ActiveSupport::Cache::FileStore should log details of the exception when an exception is thrown

Fix bug when Rails.application is defined but is nil. See #881

Currently, when saving a frozen record, an exception would be thrown
which causes a rollback. However, there is a bug in active record that
"defrost" the record as a side effect:

    >> t = Topic.new
    => #<Topic id: nil, ...>
    >> t.freeze
    => #<Topic id: nil, ...>
    >> t.save
    RuntimeError: can't modify a frozen Hash
    >> t.frozen?
    => false
    >> t.save
    => true

This patch fixes the bug by explictly restoring the frozen state on the
attributes Hash after every rollback.

These variables were issuing some "not used" warnings.

Only constantize class_name once.

Add instance_accessor option to class_attribute

The input types added are:

- input[type="month"]

- input[type="week"]

- input[type="datetime"]

- input[type="datetime-local"]

This reverts commit 254c0428, reversing
changes made to 513a0525.

Resolver concurrency fix

In order to avoid holding a global lock when doing template
resolution, instead add individual locks on a per cache entry
basis. The global lock is now only used for manipulation of the main
cache data structure.

The Template cache in the Resolver can be accessed by multiple threads
similtaneously in multi-threaded environments. The cache is implemented
using a Hash, which isn't threadsafe in all VMs (notably JRuby).

This commit extracts the cache to a new Cache class and adds mutexes to
prevent concurrent access.

When a route references a missing controller, raise ActionController::RoutingError with clearer message