Workaround about tabbar-ruler in Emacs 24.4

See https://bitbucket.org/bamanzi/dotemacs-elite/issue/24/tabbar-ruler-not-work-in-emacs-244-keep
Workaround about invalid faces
electric-indent-mode is enabled by default on Emacs 24.4

`C-j' is bound to inserting newline without indent.
Uniquify is enabled by default in Emacs 24.4
Change foreground of tabbar-selected-modified
Indentation of parenthesis is fixed in Emacs 24.4
Enable flyspell-mode on git-commit-mode
Fix: recentf-mode is not enabled by default
More Ruby file types are added to auto-mode-alist
desktop-save-mode automatically saves the desktop in Emacs 24.4
Hide prefix 'prefer-' in coding systems
Replace `eval-after-load' and `progn' with `with-eval-after-load'
Remove an unused setting in markdown-mode