Code has been reviewed to solve several errors, simplify some parts
and to improve some components.

In order to set a height to the Newick tree, the number of nodes are
calculated and multiplied by the node size. This adjust the size of
the canvas to the actual tree.

The errors were introduced during the Angular upgrade done.

The description of the project is added in the tree view, the logic
of the dialogs is modified so that it works generically with nodes
with two or more families and the autocomplete in the search is added

The home component has been renamed to families-tree, as it only
contains the Newick tree.