Add commentstrings for use with commentary.vim
Add 'c' as an alias for 'cat'
Add some aliases
Rename the SVN specific review branch function

Prefix the SVN specific review branch function with "svn" so that it is
clearly distinguished by the git review branch function/script.
Add function to fetch pull request
Add help to run a simple HTTP server
Add help to install perl modules
Add git help to see files changed in each commit
i3: stick gitk to workspace 5

Workspace 5 works best for gitk as switching to workspace 5 can be done
with 'Mod + 5' & reloading gitk can be done with 'Shift + F5'
Add IdentitiesOnly to ssh config

This is to enable working with multiple github accounts from the same
system.
Add steps to install ag