Updates to antigen plugins

- Run hash and antigen bundle on same line
- Add vagrant plugin
Start zsh from bash only if zsh exists
Updates to gitconfig

- clf alias:
 - Exclude IntelliJ and Vagrant config files in 'clf' alias
 - Remove old BB excludes
- Remove sourcetree diff/merge tools
- Add Splice mergetool
- Set BeyondCompare3 as the default merge and diff tools
- Add line numbers to grep
Add more VMs to ssh config
Add ADT and AIO dev tools to zsh path