When editing, the "edit" button should become a "save" button which does "save and view"

While editing a page, I clicked again on the edit button meaning to save and of course it re-opened edit again and lost my edit. I realized that we should be offering the user an option to save because the edit button is completely nonsensical in the context where you are already editing.

I propose that in wiki/wysiwyg mode, the button should become a green "save" button (the actual action should be save-and-view), but still have the down arrow to select a different edit mode.

This serves two purposes, #1 it clearly indicates to a tired user on a monday that they are editing and #2 it provides an efficient way to save a small change without scrolling down (especially for users who don't know the hot-keys)

In any case, it should be easy to agree that providing a button which takes the user back to the exact same page they are on is nonsensical.