Make Text::Aspell optional. This is mostly to unblock development on HEAD

for those of us who can't get Text::Aspell to work, with no UI components
added to show that the spell checker is disabled.

docs/changelog/7.x.x.txt

@@ -1,5 +1,6 @@
 7.2.0
  - Added server side spellchecker (Martin Kamerbeek / Procolix)
+ - change: made Text::Aspell optional, nullifying spellchecker if not present
 
 7.1.2
  - Fixed a bug that caused workflows to fail if collaboration systems and

lib/WebGUI/Asset/RichEdit.pm

@@ -19,7 +19,7 @@ use WebGUI::Asset;
 use WebGUI::Form;
 use WebGUI::Utility;
 use WebGUI::International;
-use Text::Aspell;
+eval 'use Text::Aspell';  # Optional
 
 our @ISA = qw(WebGUI::Asset);
 

lib/WebGUI/Operation/SpellCheck.pm

@@ -12,7 +12,8 @@ package WebGUI::Operation::SpellCheck;
 
 use strict;
 use Encode;
-use Text::Aspell;
+# Optional, but if unavailable, spell checking will have no effect.
+eval 'use Text::Aspell';
 use WebGUI::Utility;
 
 =head1 NAME
@@ -40,6 +41,7 @@ An instanciated session object.
 sub _getSpeller {
 	my ($baseDir, $userDir, $homeDir);
 	my $session = shift;
+	return undef unless Text::Aspell->can('new');
 	my $speller = Text::Aspell->new;
 
 	# Get language

sbin/testEnvironment.pl

@@ -92,7 +92,7 @@ checkModule("URI::Escape","3.28");
 checkModule("POSIX");
 checkModule("List::Util");
 checkModule("Color::Calc");
-checkModule("Text::Aspell");
+checkModule("Text::Aspell",0.01,2);
 
 ###################################
 # Checking WebGUI