Add search button and fix unset timeline beginning

src/api/search.nim

@@ -42,7 +42,7 @@ proc getSearch*[T](query: Query; after, agent: string): Future[Result[T]] {.asyn
     }
 
   let json = await fetchJson(base / searchUrl ? params, headers)
-  if json == nil: return Result[T](query: query)
+  if json == nil: return Result[T](query: query, beginning: true)
 
   result = getResult[T](json, query, after)
   if not json.hasKey("items_html"): return

src/api/timeline.nim

@@ -5,7 +5,7 @@ import ".."/[types, parser, parserutils, formatters, query]
 import utils, consts, media
 
 proc finishTimeline*(json: JsonNode; query: Query; after, agent: string): Future[Timeline] {.async.} =
-  if json == nil: return Timeline()
+  if json == nil: return Timeline(beginning: true, query: query)
 
   result = Timeline(
     hasMore: json["has_more_items"].to(bool),