Name conflict for deb package in Ubuntu

[rgoubet]

The package in the deb file is currently named "tad". This conflicts with another one in the Ubuntu repo.

tad/mantic,mantic 3.1.0+~cs10.23.44-1 all
  Javascript test suite with minimal hassle

As a result, after installing Tad, it gets immediately overwritten by the one on the repository, which has a higher version number, when running apt upgrade.

The package in the deb file should be renamed, e.g., "tad-viewer".