fix name schema for sudo plugin

Plugin won't load automatically if added to variable $plugins, if name schema different than $name/$name.plugin.zsh is used (see is_plugin() in oh-my-zsh.sh).
Merge pull request #2368 from lumbric/master

fix name schema for sudo plugin
Added my own theme based on powerline and changed install script to
point to my repo.
Added my custom autocomplete and options plugins
Stop autocorrecting certain cmds
updated install.sh to use bash
Add custom/sshsock.zsh to fix tmux fwd agent
Add TMOUT=0 to prevent timeout
Modified zsh options