Lay out and drive the depot browser the way the old starter did

Picking a category picks its first class and lists that class, instead of
every vehicle of the category; only categories with something in them are
offered, in the old order. The archival switch has its own line, the class
box shows the thumbnail of the class picked, and the search sits above the
list and looks through every vehicle. The rows are the bare texture names, a
set marked faintly; an empty list says what to do; the thumbnail and Add
share a line so the list keeps its height.

StarterNG/startercfg/lang/cz.xml

@@ -95,6 +95,9 @@
     <String key="Crew">s osádkou</String>
     <String key="Reversed">otočeno</String>
     <String key="NoVehicles">Ve složce dynamic/**/textures.txt nebyla nalezena žádná vozidla.</String>
+    <String key="BrowserHint">Vyberte kategorii nebo napište název vozidla.</String>
+    <String key="BrowserNoMatch">Nic neodpovídá „{0}“.</String>
+    <String key="SearchAllVehicles">Hledat ve všech vozidlech…</String>
     <String key="ConsistEmpty">Přidejte vozidla z databáze vlevo nebo načtěte existující soupravu ze souboru scenérie.</String>
     <String key="TipMoveLeft">Posunout doleva</String>
     <String key="TipMoveRight">Posunout doprava</String>