Standardize on American spellings.

Full internationalization would be much cooler, but that's never going
to happen.  Given that, this will at least prevent folks from constantly
having to look and switch between typing "armor" and "armour", depending
on which zone each item originated in, etc.

I could flip these either way, but a survey of the current state shows
that about 80% of the mixed cases use the American spellings, while 20%
use the British.  And, most words *only* exist in this data in their
American forms.  So, it seems the majority prefer these spellings.

In case anyone likes trivia:
* The most common mixed words in here were "armour" and "colour", each of
  which occured about half as often as "armor" and "color", respectively.
* The most British word in here was "theatre" (including other forms),
  which occured about twice as often as "theater".

This stanardizes all of these (and other forms of these same words):
* armour -> armor
* colour -> color
* favour -> favor
* honour -> honor
* civilise -> civilize
* centre -> center
* theatre -> theater
* defence -> defense
* offence -> offense
* realise -> realize

lib/world/wld/279.wld

@@ -281,7 +281,7 @@ S
 #27915
 Western Aisle~
    This long aisle lies to the western side of the cathedral, rays of natural
-light splaying through the large coloured window, passages from the bible
+light splaying through the large colored window, passages from the bible
 carefully scrawled into the glass, along with a representation of Christ's
 birthday; green pastures filled with shepherds and their flocks.
 ~
@@ -348,7 +348,7 @@ S
 #27918
 Eastern Aisle~
    Lined with several glass artworks, this corridor is pierced through with
-many coloured rays of light, apparently turning off to the north and south.
+many colored rays of light, apparently turning off to the north and south.
 Here, the largest of all the visible windows portrays a mosaical crucifixion of
 Christ, a small inscription reminding visitors to give tithe.
 ~
@@ -415,7 +415,7 @@ D2
 S
 #27921
 The Western Aisle~
-   Coloured shafts of light dance along this long crimson-carpeted floor,
+   Colored shafts of light dance along this long crimson-carpeted floor,
 streaming from a large stained-glass representation of Christ's submersion by
 John the Baptist in the Jordan River. Carved benches are lined orderly here,
 polished and cushioned for the French people of privileged social class.
@@ -792,7 +792,7 @@ D1
 S
 #27942
 Downtown~
-   This is the downtown area of the city, colourful banners and posters
+   This is the downtown area of the city, colorful banners and posters
 advertising the various shops here. The lazy babbling of a fountain can be
 heard, along with the mellow sounds of chattering people. To the east a small
 magic shop displays its wares in the window, and to the west is a small
@@ -819,7 +819,7 @@ S
 #27943
 The Magic Shop of France~
    This cozy tent is made of draping blue and purple cloth, various stands and
-shelving displaying powders and coloured glass bottles of potion. A heady scent
+shelving displaying powders and colored glass bottles of potion. A heady scent
 fills the air, as if concoctions have only recently been brewed, and the subtle
 sound of something bubbling away can be heard.
 ~
@@ -1204,7 +1204,7 @@ D1
 S
 #27961
 The Entrance to the Plaza Louis XIV~
-   A little walkway winds through this mostly paved square, beautiful coloured
+   A little walkway winds through this mostly paved square, beautiful colored
 flowers carefully pruned and sculpted. Slender trees whisper quietly amongst
 themselves, cool leafy branches fanning the air as they sway. Two wooden
 benches stand either side of the square, painted a pale white, a little note
@@ -1385,7 +1385,7 @@ S
 Revolution Plaza~
    This seems to be the western end of the plaza, an old building with large
 windows looming from the horizon to the east. Blossoming flowers and shrubbery
-border the paving here, natural hues of grassy green and the colourful splashes
+border the paving here, natural hues of grassy green and the colorful splashes
 of red and purple blooms brightening the place.
 ~
 279 0 0 0 0 1
@@ -1546,7 +1546,7 @@ The Musketeer's Room~
    This large room is brightly lit, a place of rest for the Musketeers after a
 long day's work. Several chairs and beds stand throughout the room and against
 the walls, and a big wooden table holds a scattered deck of playing cards. Lush
-red carpeting pads the floor, and many colourful Van Gogh paintings decorate
+red carpeting pads the floor, and many colorful Van Gogh paintings decorate
 the walls.
 ~
 279 8 0 0 0 0