Imageshare

Bug 944288 [UITEST] add  Share Image Activity.
Modification in test_apps/uitest/index.html, addition of  test_apps/uitest/tests_html/API/shareimage.html  and    test_apps/uitest/js/API/shareimage.js

![image1](https://f.cloud.github.com/assets/4078325/1797941/b0f3271c-6b1d-11e3-9a0b-1695eef078f1.png)
![image2](https://f.cloud.github.com/assets/4078325/1797942/b56c4dbe-6b1d-11e3-934c-db791bd401b7.png)
![image3](https://f.cloud.github.com/assets/4078325/1797943/c0187c2e-6b1d-11e3-8986-4347a758db62.png)