redo API intro
intro action/application
correct intro action/application
new Action::getImageUrl
Relecture 1 de Contents/API/introduction.md
Merge pull request #1 from CircleCode/patch-1

Relecture 1 de Contents/API/introduction.md
remarks cbo
remarks cbo 2
add ref links
Update Contents/API/Class_Action/Method_getImageUrl.md
Merge pull request #2 from cbonnissent/patch-1

Update Contents/API/Class_Action/Method_getImageUrl.md
move result note to example section
remarks MCO
Contents/API/Class_Action/Method_canExecute.md
Contents/API/Class_Action/Method_exitError.md
Contents/API/Class_Application/Method_addCssCode.md
Contents/API/Class_Application/Method_addCssRef.md
Contents/API/Class_Application/Method_addJsCode.md
Contents/API/Class_Application/Method_addJsRef.md
Contents/API/Class_Application/Method_getCSSLink.md