Create base classes and implement to core library (issue #102)

This version introduces multiple enhancements:

finished blue_object
added other blue objects empty classes

Details of additions/deletions below:
--------------------------------------------------------------

Added:      /BLUE_FRAMEWORK/packages/Blue/blue_array_class.php
            -- Added --
                empty blue object

Added:      /BLUE_FRAMEWORK/packages/Blue/blue_model_class.php
            -- Added --
                empty blue object

Added:      /BLUE_FRAMEWORK/packages/Blue/blue_resource_class.php
            -- Added --
                empty blue object

Added:      /BLUE_FRAMEWORK/packages/Blue/blue_number_class.php
            -- Added --
                empty blue object

Added:      /BLUE_FRAMEWORK/packages/Blue/blue_string_class.php
            -- Added --
                empty blue object

Modified:   /BLUE_FRAMEWORK/packages/Blue/blue_object_class.php
            -- Added --
                $_newKeys to contains all new data elements keys
                mergeBlueObject allow to join two blue objects into one
                _removeNewKeys remove all new keys from given data
                _xmlToArray recurrent function to travel on xml nodes and set their data as object data
                _appendSerialized set set data from serialized string as object data
            -- Updated --
                __construct added serialized input type data
                getOriginalData to store in originalData only data that will be changed
                compareData to store in originalData only data that will be changed
                unsetData to store in originalData only data that will be changed
                restoreData to handle originalData
                replaceDataArrays and set information that data was changed
                _appendJson fixed data to set
                _appendXml added missing documentation, rewrite whole convert logic
                _appendArray, removed originalData handling
                _putData to store in originalData only data that will be changed
                _convertKeyNames code refactor
                _stringToIntegerKey fixed error with name