Admin to show last data push for each sensor location

[karimkawambwa]

Description

Administrator to see each location last data push date.

Fixes # (issue)

Type of change

Please delete options that are not relevant.

• [x] New feature (non-breaking change which adds functionality)

Screenshots

cc @kilemensi @DavidLemayian

Checklist:

• [ ] My code follows the style guidelines of this project
• [ ] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation

[kilemensi]

Looks fine @karimkawambwa:

1. Include node id or something to identify a node (Unless it's already included but not shown in the screenshot),
2. Last pushed should probably change to Last received at,
3. Change Geo to Coordinates or something a bit more descriptive (Lat, Long could also work), and
4. Last received at should go last (Node, Location <coordinates, street/common name, city>, Last received at)