Fix whitespace issues in NumericField/NumericFieldTest
Update versioning.md

Added information about $SilverStripeNavigator
Update versioning.md
Merge pull request #3606 from g4b0/patch-5

Update versioning.md
Explicit cast return of DBField->exists()
Update translations
Add changelogs for 3.1.7-rc1
Added 3.1.7-rc1 changelog
Update DataObject.php

Documentation fix:

Table at http://api.silverstripe.org/3.1/class-DataObject.html is displaying the data wrong. Current it says "protected A" instead of "protected ValidationResult" as it should be.
Merge pull request #3613 from spekulatius/patch-1

Update DataObject.php
Update HtmlEditorConfig::enablePlugins() to return instance
Filter heading being processed as part of code

Whitespace issue causing the filter header to become part of the sorting example above - fixed whitespace.
Merge pull request #3619 from phillprice/patch-5

Filter heading being processed as part of code
Merge pull request #3618 from kinglozzer/pulls/htmleditorconfig-chainable

Update HtmlEditorConfig::enablePlugins() to return instance
Update forms.md

Should be "set" not "get" in FormField->setSmallFieldHolderTemplate().
Bugfix: fixed inheritance breaks filtering if relations are included (issue #3610)
Merge pull request #3625 from AntonyThorpe/patch-1

Update forms.md
FIX: DataObject::db() doesn't respect overloaded db types (fixes #3620)
Merge pull request #3622 from g4b0/3610-inheritance-breaks-filtering-if-relations-are-included-bugfix

Bugfix: fixed inheritance breaks filtering if relations are included
Should use <% with %> rather than <% loop %>