Allow hotkeys to be disabled in user account preferences

Please make it possible to disable Confluence's hotkeys on a per-user basis in user account preferences.

When entering text in most web browsers on MacOSX (in fact in most applications on MacOSX), the following control-key combinations are already claimed for editing shortcuts:

Ctrl-A (move to beginning of line)
Ctrl-E (move to end of line)
Ctrl-D (kill next character)
Ctrl-K (kill to end of line)
Ctrl-Y (paste killed characters)
Ctrl-P (move to previous line)
Ctrl-N (move to next line)
Ctrl-B (move to previous character)
Ctrl-F (move to next character)
and probably others.

Many users, especially programmers who are used to these key combinations from thousands of hours in Emacs, habitually use these shortcuts to quickly navigate and edit text. The fact that Confluence (and evidently other Atlassian applications, as I just discovered while entering this issue and accidentally typed "Ctrl-B") overrides these fundamental text editing shortcuts with its own makes it extremely painful to compose large amounts of text in the browser.

It is so bad that typically I resort to copying the contents of a Confluence page that I am editing into a text editor, edit the text, and then paste it back into the browser. This is because it is incredibly inconvenient when the cursor jumps to another text field or the page navigates away from what I am editing (in the middle of typing), simply because I am trying to use one of the above standard MacOSX text entry shortcuts.