Suggest reconfiguring keymap during update only for Macs
Removed unused code
VIM-479 Don't try to put read-only editors into insert mode
Fixed NPE in VimKeyMapUtil.installKeyBoardBindings
VIM-478 Fixed bug in reconfiguring Vim keymap based on user-defined keymaps
Fixed copying second keystrokes in Reconfigure Vim keymap
Merge branch 'vim-479'