Create initial language support

Create support for languages, then reformat user, home, and post pages
to use it, and create en and en-us language files.

src/site/pug/includes/next_page_button.pug

@@ -4,8 +4,14 @@ mixin next_page_button(user, selectedTimeline, url, type)
 			-
 				const nu = new URL(url)
 				nu.searchParams.set("page", selectedTimeline.pages.length+1)
-			a(href=`${nu.search}#page-${selectedTimeline.pages.length+1}` data-page=(selectedTimeline.pages.length+1) data-username=(user.data.username) data-type=type)#next-page.next-page Next page
+			a(
+				href=`${nu.search}#page-${selectedTimeline.pages.length+1}`
+				data-page=(selectedTimeline.pages.length+1)
+				data-username=(user.data.username)
+				data-type=type
+				data-loading-text=ll.next_page_button_loading
+			)#next-page.next-page= ll.next_page_button
 	else
 		div
 			div.page-number.no-more-pages
-				span.number No more posts.
+				span.number= ll.no_more_posts_notice

src/site/pug/includes/post.pug

@@ -39,7 +39,7 @@ mixin post(post, headerWithNavigation)
 								if caption
 									p.description= caption
 							p.description
-								span Posted on #[time(datetime=post.date.toISOString() data-local-date)= post.getDisplayDate()].
+								span!= ll.pug_post_timestamp({post})
 
 		section.images-gallery
 			for entry in post.children

src/site/pug/includes/timeline_page.pug

@@ -5,7 +5,7 @@ mixin timeline_page(page, pageIndex)
 		- const pageNumber = pageIndex + 1
 		if pageNumber > 1
 			header.page-number(id=`page-${pageNumber}`)
-				span.number Page #{pageNumber}
+				span.number= ll.fn_page_divider(pageNumber)
 
 		.timeline-inner(class=`${settings.timeline_columns}-columns`)
 			- const suggestedSize = 260 //- from css :(