add CSS class to style dimension labels in component list
Re-add left sidebar spinner (fade in if app is working)
Hide whole attribute block, if NO attribute is available
Hide dimension entry stuff in list if it only has one element

Use CSS class for styling (cubeviz-component-selectedElementsBlock)
Re-enable help dialog for dataset selection, extend dataset selection dialog
Add help dialog for attribute and measurement area (located in Attribute.ts)

adapt naming in DataSet.ts
Extend measure dialog with title and short description
Further help dialog improvements
Add description text to component dimension dialog
Fix usage of left sidebar spinner
Micro translation fix for DataSet selection dialog
Fix wrong attribute usage

Appeared while using exampleCube.ttl
Fix problem of wrong deactivated select buttons and increase attr handling

Sometimes it happens that the select-all/deselect-all buttons
were deactivated. This was because of the missing update of the
new number of selected elements.

Increase attribute uri handling. It is now possible that the
attribute uri is not the predicate associated with an observation
but could also but the object with predicate "cube:attribute".
Update archives to new version 0.7.1