tmux configuration changed

The previous setup for vim-tmux-navigator to go left conflicted with
the 'clear' shortcut Ctrl-l. Hence another shortcut for
vim-tmux-navigator is used.
Fixed merge conflict
Vim config updated
Changed Vim window navigation

Vim window navigation with just Ctrl-j is incompatible with Vim-Latex
and to be consistent all key remaps are changed.
Fixed dispute between vim-tmux and vim-latex

Both plugins uses Ctrl-j; it is now remapped for vim-latex
RCM config on Mac
Updated gitconfig

Changed name. Gitignore location with $HOME.
Bundle: Gundo

Note that this bundle requires Python support
Path for shells and Git

Anaconda included in path for zsh and bash.
Global gitignore set with ~ instead of $HOME
Fixed merge errors

Gundo hotkey and vim-latex next placeholder