Update slop and pry gems

I have newer versions, and I don't want to bundle exec.
Silence debug output
Coastal30 adds the app dirs to $LOAD_PATH for easier requires
Remove debug output from specs
Add memcache support

Using Chachier for memcached on Heroku
Add debugger gem
Use memcached for both watches
Use shotgun for app reloading in development
Render the income template
List monthly income total