Refactoring

[vlad-ed-git]

Architectural refactoring to a specific standard.

[vlad-ed-git]

TODO

• Remove usage of code marked as deprecated
• Remove text field on_change_calls, and subsequently remove the need for storing their state in the Ui
• Make core views classes

[clstaudt]

@vlad-ed-git What is the status of this? Can it be merged into the dev branch before there is much divergence?

[vlad-ed-git]

The progress so far is already merged

[clstaudt]

#207