Added set_password and show_definition

[dimitri-yatsenko]

The property real_definition contains the reversed engineered table definition. This is useful for updating the definition when changes are made elsewhere.

[coveralls]

Coverage decreased (-1.8%) to 88.811% when pulling dfeb494 on dimitri-yatsenko:master into c3fdc3d on datajoint:master.

[coveralls]

Coverage increased (+0.04%) to 90.61% when pulling 304dd5d on dimitri-yatsenko:master into c3fdc3d on datajoint:master.

[coveralls]

Coverage increased (+0.04%) to 90.61% when pulling dbd1a2b on dimitri-yatsenko:master into c3fdc3d on datajoint:master.

[coveralls]

Coverage increased (+0.04%) to 90.616% when pulling 2692d45 on dimitri-yatsenko:master into c3fdc3d on datajoint:master.

[coveralls]

Coverage increased (+0.04%) to 90.616% when pulling 007535c on dimitri-yatsenko:master into c3fdc3d on datajoint:master.