Fix babel error and update ideogram documentation.

[shammamah-zz]

Building the bundle after the dependencies updated from @renovate-bot (#284) was resulting in the following error:

ERROR in ./src/lib/index.js
Module build failed (from ./node_modules/babel-loader/lib/index.js):
Error: Cannot find module '@babel/core'
 babel-loader@8 requires Babel 7.x (the package '@babel/core'). If you'd like to use Babel 6.x ('babel-core'), you should install 'babel-loader@7'.

We can also try to work with the changes Renovate Bot has suggested, instead of fixing the babel-loader package to an outdated version (@mkcor -- would love your thoughts on this, since you've been working the most with the Renovate Bot).

Description of changes

• Fix babel-loader version to 7.0.0 so that babel-core can be used.
• Generate new version of Ideogram with the updated docstrings from Update ideogram tests. #280

Before merging

• I have gone through the code review checklist
• I have completed all of the steps to take before merging
• I know how to deploy to DDS

[mkcor]

Good catch on updating the Ideogram Python class and metadata! Proof that I didn't rebuild the dash_bio package...

[mkcor]

@shammamah I would much prefer upgrading Babel (https://babeljs.io/docs/en/v7-migration) rather than downgrading babel-loader. Apparently, Babel 7 has been around for over half-a-year (https://babeljs.io/blog/2018/08/27/7.0.0), so I think it would be about time to migrate... Now, if this migration turns out to be very demanding, we can pass in the very short term (and I can approve this PR), but please try first and let me know how much effort you estimate it would require.

[shammamah-zz]

Fixed the babel presets and the dev dependencies as per the instructions here: babel/babel#6808 (comment)

[mkcor]

Fixed the babel presets and the dev dependencies as per the instructions here: babel/babel#6808 (comment)

Yay! Great job, @shammamah 👍