Added a testcase for EM for the new functionality that removes escape…

… chars from curly braces.

application/helpers/expressions/em_manager_helper.php

@@ -6878,6 +6878,7 @@ static function UnitTestProcessStringContainingExpressions()
             );
 
             $tests = <<<EOD
+This example shows escaping of the curly braces: \{\{test\}\} {if(1==1,'{{test}}', '1 is not 1?')} should not throw any errors.
 <b>Here is an example of OK syntax with tooltips</b><br />Hello {if(gender=='M','Mr.','Mrs.')} {surname}, it is now {date('g:i a',time())}.  Do you know where your {sum(numPets,numKids)} chidren and pets are?
 <b>Here are common errors so you can see the tooltips</b><br />Variables used before they are declared:  {notSetYet}<br />Unknown Function:  {iff(numPets>numKids,1,2)}<br />Unknown Variable: {sum(age,num_pets,numKids)}<br />Wrong # parameters: {sprintf()},{if(1,2)},{date()}<br />Assign read-only-vars:{TOKEN:ATTRIBUTE_1+=10},{name='Sally'}<br />Unbalanced parentheses: {pow(3,4},{(pow(3,4)},{pow(3,4))}
 <b>Here is some of the unsupported syntax</b><br />No support for '++', '--', '%',';': {min(++age, --age,age % 2);}<br />Nor '|', '&', '^': {(sum(2 | 3,3 & 4,5 ^ 6)}}<br />Nor arrays: {name[2], name['mine']}