Unescaped breadcrumbs for inline groups display (fixes #7936)
BUG Form session message clearing regression

Regression originally from 729bcc95, but made visible by 014f541a8
HTMLEditorField undefined $dimensionsField (fixes #7494)

Also use fluent API for form field definition to keep field invocations
in one place and thereby reduce these kind of bugs.
Merge remote-tracking branch 'origin/3.0' into 3.1

Conflicts:
	admin/css/screen.css
	admin/scss/_style.scss
	core/PaginatedList.php
	email/Mailer.php
Merge remote-tracking branch 'origin/3.0' into 3.1
Merge remote-tracking branch 'origin/3.1'
Merge remote-tracking branch 'origin/translation-staging'
Breadcrumb/back nav in ModelAdmin now retains search params
Updated translations
Arbitrary placement of _ss_environment.php in parent folders

Removes hardcoding to three levels
Updated issue reporting guidelines
Merge remote-tracking branch 'origin/3.0' into 3.1

Conflicts:
	lang/en.yml
Merge remote-tracking branch 'origin/3.1'
Clarified docs on isDev usage in dev/build
More docs on CMS issue reporting
MINOR: typo in DataList

small change in DataList::filterByCallback.  new ArrayList; changed to new ArrayList(); and added @return as this is particular important for this method (unexpected return type). 
FIX PHPUnit latest not working with composer installed builds

When using composer, we must rely on the composer autoloader to
load in PHPUnit and not try do to so ourselves, as the old
PHPUnit\Autoload.php file doesnt understand how to find things
in vendor
FIX PHPUnit latest not working with composer installed builds

When using composer, we must rely on the composer autoloader to
load in PHPUnit and not try do to so ourselves, as the old
PHPUnit\Autoload.php file doesnt understand how to find things
in vendor
FIX PHPUnit latest not working with composer installed builds

When using composer, we must rely on the composer autoloader to
load in PHPUnit and not try do to so ourselves, as the old
PHPUnit\Autoload.php file doesnt understand how to find things
in vendor
Merge pull request #1117 from silverstripe-rebelalliance/fix/phpunit/3.0

FIX PHPUnit latest not working with composer installed builds