Documentation: Added proxy guidance related to .insteadOf and personal network drives.
Fixes #6152.
Merge pull request #6199 from EricDunsworth/v4.0-docs-proxy-insteadof-networkdrive

Documentation: Added proxy guidance related to .insteadOf and personal network drives.
Footnotes: Updated ID guidance for multi-referenced footnotes in documentation.
Forgot to update guidance for it in #4019 (which resolved #3257).
Merge pull request #6198 from crichard/lightbox-6193

Lightbox: add ajax override and include example and documentation
Merge pull request #6204 from EricDunsworth/v4.0-docs-footnotes-dashes-numbers

Footnotes: Updated ID guidance for multi-referenced footnotes in documentation.
Data Ajax: Added support for  CORS and a fallback when CORS isn't supported
Session Timeout and Documentation: Added missing window[ 'wb-sessto' ] support and missing documentation for window[ componentName ] to all relevant plugins.

Related to #6181
Merge pull request #6202 from LaurentGoderre/data-ajax-cors

Data Ajax: Added support for  CORS and a fallback when CORS isn't supported
Merge pull request #6205 from pjackson28/addsupportforwindowparams

Session Timeout and Documentation: Added missing window[ 'wb-sessto' ] support and missing documentation for window[ componentName ] to all relevant plugins.
fixed the ellipsis in IE8 for the DL element
[i18n] Updated the French translation for the 'play' label for the multimedia player and carousel.
Feeds: removed the col- class from the Flickr list items for them to flow at sm and md views
Template: Move the metadata to an include
Merge pull request #6220 from LaurentGoderre/core-template-metadata

Template: Move the metadata to an include
Feeds: Reorder the code in a more logical fashion
Grouped helpers methods together and ordered the core methods in the order they are called
Merge pull request #6221 from LaurentGoderre/flickr-thumbnails

Feeds: Reorder the code in a more logical fashion
Merge pull request #6214 from thomasgohard/translation-play

[i18n] Updated the French translation for the 'play' label for the multimedia player and carousel.
[Print CSS] Set the print CSS for the page header elements.
Merge pull request #6223 from thomasgohard/print-css-page-header

[Print CSS] Set the print CSS for the page header elements.
Merge pull request #6218 from shawnthompson/flickr

Feeds: removed the col- class from the Flickr list items for them to flow at sm and md views