offline rendering of the Graph

[wey-gu]

refs:

• Query: Network Graph in Offline Mode WestHealth/pyvis#36
• pyvis offline mode WestHealth/pyvis#159

We don't have the licensing issue as we are Apache 2.0 :)

[wey-gu]

it could be fixed with:

• Do not load external bootstrap resources for cdn_resources = 'in_line' | 'local' WestHealth/pyvis#201
• in_line configured