[reports] Style inline generators

[jhmullen]

In cms-1.0-develop, one can click a generator in VariablesList, and the entire modal will replace its contents with the generator the user clicked. They can edit this, then click "Save & Return" at which point the modal returns to the statlike.

Dave, can you style this such that:

• The hover is conditional over only generators
• The hover is somehow meaningful for clicking (use a tooltip to explain?)
• The transition of going from the normal editor to the setInlineId editors has some kind of visually helpful slide/transition
• Any other design elements that would help the user understand "where we are"

[davelandry]

VariableList is re-styled on my working branch cms-1.0-inline-generator-css: