renamed text job to phrases for easier comprehension

[mackenza]

when I first looked at Kitto I looked at the text widget and didn't quite grok the relationship between a widget, a job and the dashboard. Part of this was because the job was named text as was the widget (well Text I guess technically).

I simply renamed text.exs to phrases.exs and changed the installer template so now the text widget on the sample dashboard is similar to the other widgets where the widget name is different than the job name (`data-source="phrases" in the dashboard).

It's a small change but I think could help.

[mackenza]

some more background can be found on Gitter where @davejlong and I discussed this topic. Thanks Dave!

[coveralls]

Coverage increased (+0.9%) to 86.88% when pulling 758d345 on mackenza:rename-text-job into 261f508 on kittoframework:master.

[coveralls]

Coverage increased (+0.9%) to 86.88% when pulling 758d345 on mackenza:rename-text-job into 261f508 on kittoframework:master.

[coveralls]

Coverage increased (+0.9%) to 86.88% when pulling 758d345 on mackenza:rename-text-job into 261f508 on kittoframework:master.

[coveralls]

Coverage increased (+0.9%) to 86.88% when pulling 758d345 on mackenza:rename-text-job into 261f508 on kittoframework:master.

[mackenza]

@zorbash if you want me to clean this up with a new PR let me know. I tested my initial changes but it was working because I hadn't changed the dashboard and job to match. Fixed now.

[coveralls]

Coverage increased (+0.9%) to 86.88% when pulling 08fddbc on mackenza:rename-text-job into 261f508 on kittoframework:master.

[zorbash]

Rename the job to :phrases and remove the 1st argument which isn't required anymore from broadcast.

job :phrases, every: {4, :seconds} do
  # ...
end

[mackenza]

done

[zorbash]

Merged as 09bc604
Thanks @mackenza