Separated out an api controller

[mak001]

Pulled out methods from the locator controller and one from the locator page.
Mostly for a locator block.

Resolves #109

[codecov]

Codecov Report

Merging #192 into master will decrease coverage by 1.72%.
The diff coverage is 77.68%.

@@             Coverage Diff              @@
##             master     #192      +/-   ##
============================================
- Coverage     68.67%   66.94%   -1.73%     
- Complexity       90      102      +12     
============================================
  Files             7        8       +1     
  Lines           316      357      +41     
============================================
+ Hits            217      239      +22     
- Misses           99      118      +19

Impacted Files	Coverage Δ	Complexity Δ
src/Admin/LocationAdmin.php	0% <ø> (ø)	4 <0> (?)
src/Model/LocationCategory.php	100% <ø> (ø)	7 <0> (?)
src/Form/LocatorForm.php	78.94% <ø> (ø)	10 <0> (?)
src/Model/Location.php	100% <ø> (ø)	10 <0> (?)
src/Page/LocatorController.php	9.45% <0%> (ø)	18 <0> (?)
src/Control/APIController.php	85.43% <85.43%> (ø)	34 <34> (?)
src/Page/Locator.php	87.5% <85.71%> (ø)	17 <1> (?)

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[jsirish]

Looks good! Will need a rebase