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/CDEmoteTable.cpp

@@ -30,11 +30,6 @@ CDEmoteTableTable::~CDEmoteTableTable(void) {
 	entries.clear();
 }
 
-//! Returns the table's name
-std::string CDEmoteTableTable::GetName(void) const {
-	return "Emotes";
-}
-
 CDEmoteTable* CDEmoteTableTable::GetEmote(int id) {
 	for (auto e : entries) {
 		if (e.first == id) return e.second;