deprecate XmlElement class
fixed alignment of variable names
Fixes #5386 cookie class matches symfony class for potential future integration
Fixes #5009 return null if plugin does not exist
Merge pull request #5326 from beck24/ckeditor-duplicate-wordcount

fixes duplicate wordcount bug when multiple longtext inputs are rendered...
Fixes #5081 simpler check for non-view files and deprecated some unused code
Merge pull request #5270 from mrclay/5253-save2

Refs #5253: Entity attributes are populated on first save()
Merge pull request #5371 from juho-jaakkola/embed-container

Fixes 5370: Uses correct container when adding files through embed.
fixed typos on method name
Fixes #5207 returning false if filename is not set
Merge pull request #5384 from RiverVanRain/patch-1

Minor style fix in twitter-api lib
Merge pull request #5387 from cash/cookie

Fixes #5386 cookie class matches symfony class for potential future inte...
Use lwp-request instead of its sometimes unavailable GET alias
Fixes #5341: Makes sure elgg.session.user is an ElggUser instance
Merge pull request #5392 from mrclay/5341_2

Fixes #5341: Makes sure elgg.session.user is an ElggUser instance
Merge branch '1.8'
Corrects language URLs for client caching (lost in pervious 1.8 merge)
Merge pull request #5391 from mrclay/cron

Use lwp-request instead of its sometimes unavailable GET alias
Added target_guid and related functionalities to river.
Deprecates add_to_river in favor of elgg_create_river_item.