Moved content type model classes to correct namespace, usings cleanup and related files update.

[MiroKentico]

Moved content type model classes to correct namespace, usings cleanup and related files update.

Checklist

• Code follows coding conventions held in this repo
• Automated tests have been added
• Tests are passing
• Docs have been updated (if applicable)
• Temporary settings (e.g. variables used during development and testing) have been reverted to defaults

[codecov]

Codecov Report

Merging #103 (b314cae) into master (4be92fb) will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master     #103   +/-   ##
=======================================
  Coverage   11.23%   11.23%           
=======================================
  Files          29       29           
  Lines         365      365           
  Branches       15       15           
=======================================
  Hits           41       41           
  Misses        321      321           
  Partials        3        3           

Impacted Files	Coverage Δ
....Kontent.Boilerplate/Controllers/HomeController.cs	0.00% <ø> (ø)
...ilerplate/Models/ContentTypes/AboutUs.Generated.cs	0.00% <0.00%> (ø)
...erplate/Models/ContentTypes/Accessory.Generated.cs	0.00% <0.00%> (ø)
...ilerplate/Models/ContentTypes/Article.Generated.cs	0.00% <0.00%> (ø)
...oilerplate/Models/ContentTypes/Brewer.Generated.cs	0.00% <0.00%> (ø)
....Boilerplate/Models/ContentTypes/Cafe.Generated.cs	0.00% <0.00%> (ø)
...oilerplate/Models/ContentTypes/Coffee.Generated.cs	0.00% <0.00%> (ø)
...lerplate/Models/ContentTypes/CustomTypeProvider.cs	0.00% <0.00%> (ø)
...plate/Models/ContentTypes/FactAboutUs.Generated.cs	0.00% <0.00%> (ø)
...ilerplate/Models/ContentTypes/Grinder.Generated.cs	0.00% <0.00%> (ø)
... and 8 more

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[gormal]

LGTM!