2 improvements + 1 bugfix
- Implement the improvements made by @sfacchini in !64 (closed) because I was not able to get a feedback from him in the original MR which is based in a private branch. These improvements are related to consolidate the go-back code in WindowBase object;
- Simplify implementation of SearchToolbar, removing code to connect/disconnect events; and
- Fix Controller because it was cleaning memory of a Bookmark object it doesn't own.
@sfacchini, if you get this message, thank you man for your contribution.