Update Phalcon version to 5.1.4 for Docker, fix typos, remove duplicated migration queries

[aircodepl]

Cosmetic changes to start with:

• Updated Phalcon version to 5.1.4 for Docker,
• Fixed 2 typos,
• Removed duplicated migration queries which caused SQL errors

Through the next weeks, I'll try to fix this project to work with the Phalcon 5.x. Hope it's ok?

[aircodepl]

@niden Hi, I'm not 100% sure if removing these queries is the way to go.

If you could take a sec to look into that and merge or suggest the other way, I could move with the rest of the issues on the dedicated branch.

[niden]

@aircodepl Lets remove them for now as you have done. Honestly I do not recall this code, so if that ends up being a mistake and we need it back then we can just re-add those methods.

[codecov]

Codecov Report

Base: 6.24% // Head: 6.24% // No change to project coverage 👍

Coverage data is based on head (c33fec7) compared to base (59acba7).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff            @@
##             master    #106   +/-   ##
========================================
  Coverage      6.24%   6.24%           
  Complexity      156     156           
========================================
  Files            31      31           
  Lines           641     641           
========================================
  Hits             40      40           
  Misses          601     601           

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[niden]

Thank you @aircodepl