Improve tests, dialogs, makefile, PR template

[alexandrebarbaruiva]

New Feature Submissions:

1. [X] Does your submission pass tests?
2. [X] Have you lint your code locally prior to submission?
3. [X] Have you written proper tests to your added code?

New Dialog Submissions:

1. [X] Does all your user messages have lower letters?
2. [x] Have you lint your dialogs locally prior to submission?
3. [X] Have you written proper tests to your added dialogs on test_dialogs?
4. [X] Does your dialog have an existing category? If not, did you create it?

Changes to Core Features:

• [ ] Have you added an explanation of what your changes do and why you'd like us to include them?
• [X] Have you written new tests for your core changes, as applicable?
• [X] Have you successfully ran tests with your changes locally?

[codeclimate[bot]]

Code Climate has analyzed commit 368c1503 and detected 0 issues on this pull request.

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[codecov[bot]]

Codecov Report

Merging #29 into master will increase coverage by 6.41%. The diff coverage is 71.42%.

@@            Coverage Diff             @@
##           master      #29      +/-   ##
==========================================
+ Coverage   74.07%   80.48%   +6.41%     
==========================================
  Files           2        2              
  Lines          81       82       +1     
  Branches        1        1              
==========================================
+ Hits           60       66       +6     
+ Misses         21       16       -5

Impacted Files	Coverage Δ
bot/communication.py	100% <100%> (+8.69%)	:arrow_up:
bot/application.py	72.88% <60%> (+5.63%)	:arrow_up:

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