Fixes #5324 by removing default size options from input:text and default cols and rows options from textarea.

uses PATCH for the forms of persisted records, and routes PATCH and PUT to the update action of resources

PATCH is the correct HTML verb to map to the #update action. The
semantics for PATCH allows for partial updates, whereas PUT requires a
complete replacement.

Changes:
* adds config.default_method_for_update you can set to :patch
* optionally use PATCH instead of PUT in resource routes and forms
* adds the #patch verb to routes to detect PATCH requests
* adds #patch? to Request
* changes documentation and comments to indicate support for PATCH

This change maintains complete backwards compatibility by keeping :put
as the default for config.default_method_for_update.

ActionController::UrlEncodedPairParser is deprecated. Replaced the url parsing example with Rack::Utils.parse_query

- https://webrat.lighthouseapp.com/projects/10503/tickets/161-urlencodedpairparser-removed-in-edge-rails

This reverts commit d20281ad.

Reason: This needs more investigation. Will apply when this is verified.

Updates to remove extra whitespaces and notably fix a whitespace issue with ajax_on_rails causing a code block not to render the entire block properly.

Reason: As discussed in GitHub, it is debatable, and present tense
is fine (and simple, and preferred).

This reverts commit 54ccda9f0a5e4a5e72a4c159dc8787faaf65e8a2.

Reason: As discussed in GitHub, it is debatable, and present tense
is fine (and simple, and preferred).

This reverts commit 54ccda9f0a5e4a5e72a4c159dc8787faaf65e8a2.

see: https://github.com/blog/738-sidejack-prevention-phase-2-ssl-everywhere

Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>

Added tests for form_for and an authenticity_token option. Added docs for for_for and authenticity_token option. Added section to form helpers guide about forms for external resources and new authenticity_token option for form_tag and form_for helpers.

[#6228 state:committed]
Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>