[Freeciv-Dev] (PR#17191) Fixes for tutorial

["Per I. Mathisen" <per@xxxxxxxxxxx>]

<URL: http://bugs.freeciv.org/Ticket/Display.html?id=17191 >

This patch fixes several warnings/bugs in the tutorial.

   - Per

Index: data/scenario/tutorial.sav
===================================================================
--- data/scenario/tutorial.sav  (revision 11947)
+++ data/scenario/tutorial.sav  (working copy)
@@ -20,9 +20,9 @@
 function unit_moved_callback(unit, src_tile, dst_tile)
   if unit.owner:is_human() then
     if citiesbuilt == 0
-      and unit:type().name == 'Settlers'
-      and (dst_tile:terrain().name == 'Grassland'
-           or dst_tile:terrain().name == 'Plains') then  
+      and unit.type.name == 'Settlers'
+      and (dst_tile.terrain.name == 'Grassland'
+           or dst_tile.terrain.name == 'Plains') then  
       notify.event(unit.owner, dst_tile, E.TUTORIAL,
 _('This looks like a good place to build a city.  The next time this\\n\
 unit gets a chance to move, press (b) to found a city.\\n\
@@ -148,7 +148,7 @@
 to change your tax rates (by pressing shift-T) to dedicate some of\\n\
 your taxes directly to luxuries (every two luxuries will pacify one\\n\
 citizen).  Building a marketplace enhances the benefit from this\\n\
-by providing +50% luxuries to the city.'))
+by providing +50%% luxuries to the city.'))
       growth5msg = true
     elseif size == 8 and not growth8msg then
       notify.event(city.owner, city.tile, E.TUTORIAL,
@@ -195,7 +195,7 @@
   if not unit.owner:is_human() then
     return
   end
-  if unit:type().name == 'Settlers' then
+  if unit.type.name == 'Settlers' then
     if settlersbuilt == 0 then
       notify.event(unit.owner, unit.tile, E.TUTORIAL,
 _('You have built a settler unit.  Settlers are best used to build \\n\