Photoalbum: misc fixes

* fixed dataScroller for images
* enhanced some css styles and scripts
* UserBean made SessionScoped
* workarounded bug with CDI @Produces for getting User in Controller
* added missing messages (EN only)
* some rendering bugs fixed (etc. Comments panel and Image info was not re-rendered after image change)
* used jstl lib in some cases for checking of components to be rendered (cleaner code, replace checking for every child component of one container)
* some code was reformatted
* uncommented and fixed events for inplace inputs in *editInfo (albumEditInfo, etc.) views and changed edit buttons styles, so they are visible
* some comments fixed