Adding support for the bundle gem

By using bundle, we won't need to manually install gems anymore. By using the
Gemfile, and initially `gem install bundle`, we could just run `bundle install`
to install all the necessary gems for this application
Add to errata the other rhels too!
Merge pull request #104 from thescouser89/add_to_errata_multi_distros

Add to errata the other rhels too!
Revert "Add to errata the other rhels too!"

This reverts commit 78befd45a8ac7a1ae7a1d3ebca7bbd08b480f3a3.
Merge pull request #105 from thescouser89/add_to_errata_multi_distros

Revert "Add to errata the other rhels too!"
Revert "Revert "Add to errata the other rhels too!""

This reverts commit 77b08e579f51fb7cdc77556ebe87efd09eaad68c.
Fixed the method not found error
Merge pull request #106 from thescouser89/add_to_errata_multi_distros

Add to errata multi distros
add the -build for candidate tag when using the get_brew_name
Merge pull request #107 from thescouser89/add_to_errata_multi_distros

add the -build for candidate tag when using the get_brew_name
Cleanup ett a little bit

As ETT (and in the future, Wildbee) grows, we need to better manage the existing
code. My first attempt to cleanup ETT a little bit is by deleting the unused
helper functions that get autogenerated by Ruby on Rails, in the hopes that it
will create less confusion when people will look at the application. Why?
Because those helpers look like dead code to me and dead code leads to confusion
("Is it in use or not?")

My goal was inspired from this [blog][rails_spikes] post.

In the future, I'd like to add more unit tests and maybe also try to move code
into their rightful place. I've been guilty of putting code in the wrong areas
while I was learning Rails and I'd like to fix my mistakes.

As such, I've learned that helpers are meant to be really helpers for views and
nothing else. I'll therefore move the stuff in application_helper.rb to their
rightful place in a future commit.

My ultimate goal is to make the codebase easier to read, and maintain when ETT
will become legacy and replaced by its replacement, Wildbee.

Wildbee itself is not as future complete as ETT but given some time, it should
be, thanks to the efforts of Francisco and Miles.

[rails_spikes]: http://railspikes.com/2008/8/22/how-to-fix-your-rails-helpers
Merge pull request #101 from thescouser89/bundle_support

Adding support for the bundle gem
Merge pull request #108 from thescouser89/cleanup

Nice move Dustin!