Add TPaginator class. Fix QMetaType error.
Add more functions and fix bugs.
Remove default values in setters
Unit-test for TPaginator class
Fix bug: change ItemsCount and Limit make CurrentPage invalid
Swap expected and actual result in unit-test
Add contributor list.
Add TPaginator class. Fix QMetaType error.
Add more functions and fix bugs.
Remove default values in setters
Unit-test for TPaginator class
Fix bug: change ItemsCount and Limit make CurrentPage invalid
Swap expected and actual result in unit-test
Add contributor list.
Separate test function to data function and real test function.
Modify names of getter method to Qt-style name.
Delete meta project file.
Merge branch 'paginator' of https://github.com/tienvx/treefrog-framework into paginator

Conflicts:
	src/test/paginator/paginator.cpp
	src/tpaginator.cpp
	src/tpaginator.h
Remove typo when fix conflicts.
deleted obsolete functions.
fix a bug of creating 'ORDER BY' clause.