Don't show a disabled preference if there is nothing a user can do to enable it.
Issue 4503: Auto-fit messages option

Create a preference option to automatically shrink messages
to fit the screen width (default setting is "shrink").
Correct preference version number.

New number should match updated Settings.VERSION
Fix indentation
Revert "Don't show a disabled preference if there is nothing a user can do to enable it."

This reverts commit 0ecc49815f1b90f57a8040254bda0faa3eb46a47 because
an equivalent commit was subsequently made to master:
5f49195a0a39f573e6728277ddf711fdcb26de87
Merge branch 'Issue_4503_auto-fit_messages_option' of https://github.com/zjw/k-9 into zjw-Issue_4503_auto-fit_messages_option

* 'Issue_4503_auto-fit_messages_option' of https://github.com/zjw/k-9:
  Revert "Don't show a disabled preference if there is nothing a user can do to enable it."
  Fix indentation
  Correct preference version number.
  Issue 4503: Auto-fit messages option
  Don't show a disabled preference if there is nothing a user can do to enable it.