Add commands that work with currently open project/workspace

[tukusejssirs]

When a project/workspace is open in current window, we could have the following commands for current project/workspace (currently, we need to select a project/workspace prior to executing the particular command):

• edit project;
• rename project.

Of course, when no project/workspace is open in current window, these commands should ideally be omitted or at least made unselectable.

[Valentin-Guillet]

I actually prefer the current behavior, I usually rename projects even when they're not open. This allows me to rename or edit a bunch of projects at a time, which I find more convenient to reorganize my projects. Moreover, this only adds one key press, which is acceptable in my opinion.