ID - Adding the Upload User Data (beta)

[zaydor]

This is the first phase of adding User Uploading features to the website. This feature can be scaled to include a lot more than what is currently included so I figured splitting this into a couple of phases/PRs would be best as the basic functionality of uploading data is there.

Phase 1 (this PR) includes:

• Upload User Data menu that can be accessed from a button in the sidenav menu
• Upload Data menu has template CSVs available for download
• After filling out the CSVs, users can upload those files to the menu and have a way to visualize their data using the 4DVD globe
• Currently, only one "month/year" and pressure level is supported

Phase 2 (currently in development):

• Add support for multiple dates and layers
• Add support for the time series menu and other 4DVD analytical functionalities
• Add support for different sized grid boxes

Phase 3:

• Make the uploading process and templates more clear (a new tutorial should be made)

[zaydor]

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