Update the webpage (#1785)

* Add the document of coding standard
 * Fix invalid links
 * Update the content

JerryScript-DCO-1.0-Signed-off-by: Zsolt Borbély zsborbely.u-szeged@partner.samsung.com

05.PORT-API.md

@@ -125,7 +125,7 @@ This section describes a basic port implementation which was created for Unix ba
 
 ```c
 #include <stdlib.h>
-#include "jerry-port.h"
+#include "jerryscript-port.h"
 
 /**
  * Default implementation of jerry_port_fatal.
@@ -140,7 +140,7 @@ void jerry_port_fatal (jerry_fatal_code_t code)
 
 ```c
 #include <stdarg.h>
-#include "jerry-port.h"
+#include "jerryscript-port.h"
 
 /**
  * Provide console message implementation for the engine.
@@ -177,7 +177,7 @@ jerry_port_log (jerry_log_level_t level, /**< log level */
 
 ```c
 #include <sys/time.h>
-#include "jerry-port.h"
+#include "jerryscript-port.h"
 
 /**
  * Default implementation of jerry_port_get_time_zone.