hot_test9_1: Rewrite existn_database_finder function so that it wont traverse subdirs to search the datebase.
hot_test9_2: Backup plan viewer is now able to print no database is found.
hot_test9_3: Add checking whether the new name is already exist or not. Create a module to split the file name of database into pure name and extension.(get_DatabaseName_woExten.py)
hot_test9_4: Add a module check_elem_inList.py to check whether an element is in a list.
hot_test9_5: Backup plan viewer is done and is able to return a new name to main. Now the program flow works from the begining to returning of new name of backup plan.