CDClient cleanup and optimization (#1023)

* CDClient cleanup and optimization

- Use static function to get table name
- Remove unused GetName function
- Replace above function with a static GetTableName function
- Remove verbose comments
- Remove verbose initializers
- Remove need to specify table name when getting a table by name
- Remove unused typedef for mac and linux

* Re-add unused table

Convert tables to singletons

- Convert all CDClient tables to singletons
- Move Singleton.h to dCommon
- Reduce header clutter in CDClientManager

dDatabase/Tables/CDMissionEmailTable.h

@@ -3,12 +3,6 @@
 // Custom Classes
 #include "CDTable.h"
 
-/*!
- \file CDMissionEmailTable.hpp
- \brief Contains data for the MissionEmail table
- */
-
- //! MissionEmail Entry Struct
 struct CDMissionEmail {
 	unsigned int ID;
 	unsigned int messageType;
@@ -21,35 +15,14 @@ struct CDMissionEmail {
 };
 
 
-//! MissionEmail table
-class CDMissionEmailTable : public CDTable {
+class CDMissionEmailTable : public CDTable<CDMissionEmailTable> {
 private:
 	std::vector<CDMissionEmail> entries;
 
 public:
-
-	//! Constructor
-	CDMissionEmailTable(void);
-
-	//! Destructor
-	~CDMissionEmailTable(void);
-
-	//! Returns the table's name
-	/*!
-	  \return The table name
-	 */
-	std::string GetName(void) const override;
-
-	//! Queries the table with a custom "where" clause
-	/*!
-	  \param predicate The predicate
-	 */
+	CDMissionEmailTable();
+	// Queries the table with a custom "where" clause
 	std::vector<CDMissionEmail> Query(std::function<bool(CDMissionEmail)> predicate);
 
-	//! Gets all the entries in the table
-	/*!
-	  \return The entries
-	 */
 	std::vector<CDMissionEmail> GetEntries(void) const;
-
 };