Added additional instanceof checks for Error types

Since zend-mvc 3.0 will catch any Throwable when under PHP 7, we need to
test for either `Exception` or `Error` in the error handling view scripts.

Author: weierophinney

module/Application/view/error/404.phtml

@@ -48,7 +48,7 @@ if (isset($this->controller_class)
 
 <?php if (isset($this->display_exceptions) && $this->display_exceptions): ?>
 
-<?php if(isset($this->exception) && $this->exception instanceof Exception): ?>
+<?php if(isset($this->exception) && ($this->exception instanceof Exception || $this->exception instanceof Error)): ?>
 <hr/>
 <h2>Additional information:</h2>
 <h3><?php echo get_class($this->exception); ?></h3>

module/Application/view/error/index.phtml

@@ -3,7 +3,7 @@
 
 <?php if (isset($this->display_exceptions) && $this->display_exceptions): ?>
 
-<?php if(isset($this->exception) && $this->exception instanceof Exception): ?>
+<?php if(isset($this->exception) && ($this->exception instanceof Exception || $this->exception instanceof Error)): ?>
 <hr/>
 <h2>Additional information:</h2>
 <h3><?php echo get_class($this->exception); ?></h3>