A semi-manual s/this/self appied to the whole standard library.
Related to https://www.pivotaltracker.com/story/show/182328601
In the compiler promoted to use constants instead of hardcoded
`this`/`self` whenever possible.
# Important Notes
The PR **does not** require explicit `self` parameter declaration for methods as this part
of the design is still under consideration.
* refactor: remove invalid comment in ide/lib.rs
* refactor: current_project() returns Option
* refactor: create IDE controller without project
* refactor: handle missing project param in Cloud environment
* refactor: store project name in searcher
So no need in current_project call
* chore: apply rustfmt
* chore: fix tests
* refactor: rename maybe_project_name to project_name
* refactor: move project_name to BackendService::LanguageServer
* refactor: do not use early return in integration.rs
* refactor: use CloneCell instead of RefCell for current_project
* refactor: store model::Project in Searcher controller
* refactor: use expect instead of unwrap in searcher tests
* feat: add new_with_project_model constructor for desktop controller
It might be useful in tests
* chore: fix searcher tests
