LaTeX Export for \array

This will work for \array without
any options.

Also fix an SVG-Edit bug

test/functional/wiki_controller_test.rb

@@ -1069,7 +1069,7 @@ class WikiControllerTest < ActionController::TestCase
 %
 %   \color{} with HTML colorspec
 %   \bgcolor
-%   \array
+%   \array with options (without options, it's equivalent to the matrix environment)
 
 % Of  the standard HTML named colors, white, black, red, green, blue and yellow
 % are  predefined in the color package. Here are the rest.
@@ -1199,6 +1199,9 @@ class WikiControllerTest < ActionController::TestCase
 \raise7\p@\vbox{\kern7\p@\hbox{.}}\mkern1mu}}
 \makeatother
 
+%% Fix  array
+\newcommand{\itexarray}[1]{\begin{matrix}#1\end{matrix}}
+
 %% Renaming  existing commands
 \newcommand{\underoverset}[3]{\underset{#1}{\overset{#2}{#3}}}
 \newcommand{\widevec}{\overrightarrow}