Pull Request: C4_Mussab_Override_Default_Alert

Please Review
@mohamedsaeed93 @ahmedhagii  @mimikian @fadel1493 @Sharaf93 @rami-khalil 

Scenario Reviewers just try all 4 type of alerts with different options in javascript
1) alert("Hello")
2) alert("Hello", "success")
3) alert("Hello", "log")
4) alert("Hello", "error")
5) alert("Hello", "error", 0)
6) alert("Hello", "success", 2)