Add localized zh-Hans-CN strings for Calendar

Add localized zh-Hans-CN strings for Calendar. File contents are duplicated from the zh-HANS-TW version.
Add localized zh-Hans strings for Calendar

Add localized zh-Hans strings for Calendar. According to "yui3/src/date/lang/datatype-date-format_zh-Han*.js" all 5 files, very_short_weekdays remains the same set of characters.
Add localized zh-Hant strings for Calendar

Add localized zh-Hant strings for Calendar. According to "yui3/src/date/lang/datatype-date-format_zh-Han*.js" all 5 files, very_short_weekdays remains the same set of characters.
Add localized zh-Hant-HK strings for Calendar

Add localized zh-Hant-HK strings for Calendar. According to "yui3/src/date/lang/datatype-date-format_zh-Han*.js" all 5 files, very_short_weekdays remains the same set of characters.
Add meta data of newly added localized files for Calendar
History about recently added lang tags for zh-Han*
Added _initAria() call to renderUI() to correct missing ARIA role, tablist.
Add test for ARIA fix in Tabview
Update Tabview HISTORY.md
New unit test for Y.Template#get
Implementation of Y.Template#get
Updated user guide for Y.Template#get
Add API docs about unregistered template behavior
Added user guide docs on unregistered templates
Add test for unregistered template behavior
Build Template
Merge branch 'template-registration' into dev-3.x
Build Tabview
Merge branch 'tabview-aria' into dev-master
Merge branch 'dev-master' into dev-3.x