Revert "LRDOCS-806 Removed another reference to the automated translator service, moved some translator content from the section on plugins extending plugins to the appropriate section"

This reverts commit f45126fee45086ea386da889ec1182771789707b.
Revert "LRDOCS-806 Removed section on using Bing Translator from the Plugins SDK since automatic translations are not supported for custom plugins; 'ant build-lang' generates additional language properties files for other languages but the values are not translated; 'Automatic Copy' is just appended to the values"

This reverts commit 9acae2794ce17c3fd113b902052c893a9cc16c35.
LRDOCS-806 Updated Language properties content
LRDOCS-806 Updated section on generating automatic translations from the Plugins SDK