Polish docs for HTML, Inflector, Language, Number, Path, Security and Smiley helpers

Also fixed a DB_cache bug introduced in previous commit and removed an unused parameter in a smiley helper
diff --git a/user_guide_src/source/helpers/number_helper.rst b/user_guide_src/source/helpers/number_helper.rst
index af6cdad..8e0ebda 100644
--- a/user_guide_src/source/helpers/number_helper.rst
+++ b/user_guide_src/source/helpers/number_helper.rst
@@ -10,9 +10,7 @@
 Loading this Helper
 ===================
 
-This helper is loaded using the following code
-
-::
+This helper is loaded using the following code::
 
 	$this->load->helper('number');
 
@@ -21,25 +19,27 @@
 byte_format()
 =============
 
-Formats a numbers as bytes, based on size, and adds the appropriate
-suffix. Examples
+.. php:function:: byte_format($num, $precision = 1)
 
-::
+	:param	mixed	$num: Number of bytes
+	:param	int	$precision: Floating point precision
+	:returns:	string
+
+Formats numbers as bytes, based on size, and adds the appropriate
+suffix. Examples::
 	
-	echo byte_format(456); // Returns 456 Bytes 
-	echo byte_format(4567); // Returns 4.5 KB 
-	echo byte_format(45678); // Returns 44.6 KB 
-	echo byte_format(456789); // Returns 447.8 KB 
-	echo byte_format(3456789); // Returns 3.3 MB 
-	echo byte_format(12345678912345); // Returns 1.8 GB 
+	echo byte_format(456); // Returns 456 Bytes
+	echo byte_format(4567); // Returns 4.5 KB
+	echo byte_format(45678); // Returns 44.6 KB
+	echo byte_format(456789); // Returns 447.8 KB
+	echo byte_format(3456789); // Returns 3.3 MB
+	echo byte_format(12345678912345); // Returns 1.8 GB
 	echo byte_format(123456789123456789); // Returns 11,228.3 TB
 
 An optional second parameter allows you to set the precision of the
-result.
-
-::
+result::
 
 	 echo byte_format(45678, 2); // Returns 44.61 KB
 
 .. note:: The text generated by this function is found in the following
-	language file: language/<your_lang>/number_lang.php
+	language file: `language/<your_lang>/number_lang.php`
\ No newline at end of file