moved configuration to poi.config.js module
used poi.config module to get the table name
added JSDocs
renamed utils.sendHttoResponse() to utils.sendHttpResponse()
removed unused variable and refactored getPoiCategory()
created crud.utils.js and moved there passError()
refactored getPoiCategoriesCollection()
refactored getPoiCategory()
refactored getPoiCategory()
refactored createPoiCategory()
fixed isDeletedCategoryUsed() and refactored deletePoiCategory()
renamed a function
refactored updatePoiCategory() and changed name of a variable in deletePoiCategory()
more refactoring of deletePoiCategory() and one more fix for isDeletedCategoryUsed()