LPS-46370 reorder FTL variables

I've reordered the variables (and removed those not strictly necessary). The only exceptions are:
  - defaultLatitude / defaultLongitude: the portal administrator will probably need to customize these
    variables, and keeping them on top makes this easier.
  - showEditURL: while usages appear at the bottom of the file, in the getAbstract macro, we have to initialize
    the variable before any call to the macro ocurrs (the only call is inside the loop).