variable names modified.
Database queries refactored.
Merge pull request #1 from radiusinc/feature/PDSC-9-refactor-database-queries

Feature/pdsc 9 refactor database queries
Code refactored.
method name changed.
added null check before retrieving value.
Merge pull request #2 from radiusinc/feature/PDSC-10-Refactor-Code-in-Business-Layer

Code refactored.
added all project type to enum.
Some database queries modified.
queries modified to set project type "Harvest".
dbml file modified
Enum modified to add all project type.
Project type "Harvest" set
Merge pull request #4 from radiusinc/feature/PDSC-12-Refactor-Data-Layer

Feature/pdsc 12 refactor data layer
resolved conflicts