Cosmetic: Multiple cosmetic changes

- Added missing space to 'if', 'for', 'while' and 'switch' when it's followed by '('
- Added missing space after a comma and remove space before comma (with some exceptions)
- Remove trailing spaces
- Convert tab to spaces

Note: Only affects files with extension "cpp" and "h" under /src/server

src/server/game/Grids/Cells/CellImpl.h

@@ -54,7 +54,7 @@ Cell::Visit(const CellPair& standing_cell, TypeContainerVisitor<T, CONTAINER> &v
     CellPair begin_cell = standing_cell;
     CellPair end_cell = standing_cell;
 
-    switch(district)
+    switch (district)
     {
         case ALL_DISTRICT:
         {