Fix Static Templates Not Found

[karimkawambwa]

Description

Fix the addsensor html page not found by fixing the path of the templates directory for sensorsafrica. Additionally, introduced whitenoise to compress and serve static files.

Moreover, this fixes the path the the templates folder which seems to not work without specifying it in TEMPLATES DIRS.

Type of change

• [x] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)

Checklist:

• [x] Merge #11
• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas

[karimkawambwa]

@kilemensi

Explain it a bit... Looking at default WhiteNoise docs, you seem to be adding a bit more that the minimum required to make it work.

This additionally fixes the path to the templates folder which seems to not work without specifying it in TEMPLATES DIRS.