Merge branch 'RefactorPrint'

- Modifies printing model to be similar to glabels-3.x.
   - Allow simple projects to print by-the-page (#51)
   - Added collated vs uncollated document merges
- Added ability to separate merge groups by page
- Updated man pages
- Updated misc developer documentation

model/Variables.h

@@ -66,6 +66,7 @@ namespace glabels
 			void setVariables( const QMap<QString,QString>& definitions );
 
 			void resetVariables();
+			void resetOnCopyVariables();
 			void incrementVariablesOnItem();
 			void incrementVariablesOnCopy();
 			void incrementVariablesOnPage();