NiFi keyboard shortcuts

NiFi is a very easy tool to use with a mouse, but I think for a lot of developers who use NiFI, we have a better control with the keyboard and i think it would be great for a lot of developers to have keyboard shortcuts to use when developing over the canvas

• CTRL-Z and ALT-CTRL-Z feature, i.e to reverse actions we did (like moving a component, creating a component,  deleting a component, configuring a component and starting/stopping a component)
• To have an option to start typing the name of the component we want to hover and we will hover over the first component that its name matches what we typed (if i have a GenerateFlowfile processor in my current process group, i could start typing "Gene" and i will hover over it). this can work with processors/process groups or basically anything with a name 
• Easier traversal through the canvas, have shortcuts to go back to the father process group, the root process group and so on
• shortcuts to create components (for example CTRL-P to open the add processor tab and so on)

These are some of the features that will make NiFi even smoother and easier to use, and i hope they can be implemented