replace class_eval by define_method in abstract_controller/callbacks
Change favicon_link_tag helper mimetype from image/vnd.microsoft.icon to image/x-icon.

Although the official IANA-registered MIME type for ICO files is image/vnd.microsoft.icon,
registered in 2003, it was submitted to IANA by a third party and is not recognized by Microsoft products.
The MIME type image/x-icon should be used since is the one recognized by the major browsers on the market.
Rearrange deck chairs on the titanic. Organize connection handling test cases.
Add test for using ActionView::Helpers::FormHelper.label with block and html
Merge pull request #14835 from zzak/test_form_helper_label_with_block_and_html

Add test for using ActionView::Helpers::FormHelper.label with block and html
Merge pull request #10764 from mokevnin/replace_class_eval_by_define_method

replace class_eval by define_method in abstract_controller/callbacks
Merge pull request #13335 from glorieux/favicon_link_tag_mimetype

Change favicon_link_tag helper mimetype from image/vnd.microsoft.icon to image/x-icon.
Fix run-on sentences and improve grammar [skip ci]
Merge pull request #14836 from jonatack/patch-5

Fix run-on sentences and improve grammar [skip ci]