Implemented the insert and save functionality
A lot of work on the copy&paste functionality
Fixed the insertion to avoid PrimaryKey error
Write functionality
Added matplotlib functionality
Quit functionality
Added rudimental error reporting at saving time
Added a menu item to enter an empty vulnerability model
Address some issues raised in https://github.com/gem/qt-experiments/pull/7
Bernasocchi's review points addressed (apart from details on creating new layers)
Changed docstring
add crs, unique identifiers and indexing to new layers; fix utils module
In layer selection dialog, show layer names as in legend, instead of complete (ugly) names
Merge pull request #7 from gem/insert-save

Work on the input tool for the vulnerability functions
Improved the error management, fixed a few bugs and added a few tests
Merge branch 'master' of https://github.com/gem/qt-experiments into messagebox
Managed deletion errors
Merge pull request #13 from gem/messagebox

Improved the error management and added unittests
Merge pull request #12 from gem/address-berna-revision-points

Bernasocchi's review points addressed
Merge branch 'master' of github.com:gem/qt-experiments into standardization