can we make the id prop optional?

[chriddyp]

No description provided.

[Marc-Andre-Rivet]

Yes. But we will need to generate one at random for the internal stylesheet.

[Marc-Andre-Rivet]

Expected:

• optional id + auto generation (to respect HTML5/CSS specs, prefix it with something like 'id' so it starts with letters)
• styling still works and is isolated after making id optional
• update props in Table.js and table/props.ts
• ControlledTable still expects 'id' to be defined -- non-controlled TS table is responsible for guaranteeing a value
• at least one visual test that demonstrates that visual styles are applied to table w/o id

[Marc-Andre-Rivet]

@valentijnnieman For the prefix, etc. this issue relates to #136