WebCL Conformance test suite update for review.

    Fixes the below issues ::
    [Khronos #29] Displaying operation mode (strict / relax) on home page.
    [Khronos #41] Refactor functionalityTesting/basics/createContext.html
    [Khronos #4] Add functionality test cases for enqueueCopyImage.
    [Khronos #39] rework the "display html summary" output
    [Khronos #40] Change size of hostPtr in createImage in multiple places.[Part1]
    [Khronos #38] make it easier to identify where a test has fail
    Modify test suite as per updated specification and miscellaneous corrections.

    Contributors :
    SRI-B : Shilpa Shri, Sharath Kamath.
    SRA : Antonio, Steven and Igor.