Summary:Support/Request to add PLURAL

See:
 * Thread:Support/About MediaWiki:Wikieditor-toolbar-tool-table-toomany/en
 * Thread:Support/About MediaWiki:Wikieditor-toolbar-tool-table-toomany/en (2)
 * Thread:Support/About MediaWiki:Wikieditor-toolbar-tool-table-toomany/ko
 * Thread:Support/About MediaWiki:Wikieditor-toolbar-tool-table-toomany/en (3)
 * Thread:Support/About MediaWiki:Wikieditor-toolbar-tool-table-toomany/ksh