ferroelectric search misc. mongo databases

They are not intended for the general user. These are compressed tgz folders generated by mongodump for multiple mongodbs used to create the ferroelectric_dataset json files.

These databases include the distortion databases generated from Bilbao Crystallographic Server queries, the Fireworks launchpad database (merged from multiple databases), and the full VASP calculation database (merged from multiple). loadDBs.sh is included to upload the mongodumps to a mongodb after the files are untarred (tar -xvzf filename.tgz).