Remove the modules table

[msrocka]

As we have now a nicer result table, we can also rethink the Modules table:

It is not really needed and adding or removing a module or module-scenario pair could be just an action on the result table (which could open a small dialog). The description field is not part of the ILCD+EPD format and the product system field is not editable anyhow currently. Thus, it would make the user interface a bit more simple, if we would just remove that table.

Also, when this table is removed, we could make the sync, export, and import buttons larger and place them where currently the modules table is:

Similar like in openLCA: