Store material data in SQLite

[at15]

Material data can be stored in sqlite, and the golang server will be used instead of using MATLAB. There are two major advantages

• the server can be changed to remote server, as long as the API is the same.
• golang can compile everything into the executable ... (I guess? ....

Ref

• driver https://github.com/mattn/go-sqlite3
• https://astaxie.gitbooks.io/build-web-application-with-golang/content/en/05.3.html