Upgrade Dataset Checker

[ndeporzio]

As more datasets are generated within a datastore directory, it takes longer to search for a pre-existing dataset on each query. Instead of searching through each .ini file (which requires opening, searching, closing each file), you should write a sort of master record file. Such a file might have one line for each dataset in the datastore specifying the configuration of that dataset. Then, querying the datastore only requires opening that single file and reading the lines. I expect that would proceed much faster.

[ndeporzio]

Consider implementing a database to handle datasets. #12