[Examples] Update mobx examples to not use SSR

[lfades]

Updated 4 examples, including 2 of Mobx to not use SSR anymore.

Also tried updating another 2 Mobx related examples (with-mobx-state-tree) but after removing SSR from those they basically looked the same as the other examples, and didn't work as expected 🤔

[ijjk]

Stats from current PR

Default Server Mode

General

	zeit/next.js canary	lfades/next.js examples/mobx-no-ssr	Change
buildDuration	9.8s	9.8s	⚠️ +9ms
nodeModulesSize	47.7 MB	47.7 MB	✓

Client Bundles (main, webpack, commons)

	zeit/next.js canary	lfades/next.js examples/mobx-no-ssr	Change
main-HASH.js gzip	6.24 kB	6.24 kB	✓
webpack-HASH.js gzip	746 B	746 B	✓
de003c3a9d30..c6c1.js gzip	10.1 kB	10.1 kB	✓
framework.HASH.js gzip	39.1 kB	39.1 kB	✓
Overall change	56.2 kB	56.2 kB	✓

Client Bundles (main, webpack, commons) Modern

	zeit/next.js canary	lfades/next.js examples/mobx-no-ssr	Change
main-HASH.module.js gzip	4.78 kB	4.78 kB	✓
webpack-HASH..dule.js gzip	746 B	746 B	✓
de003c3a9d30..dule.js gzip	6.71 kB	6.71 kB	✓
framework.HA..dule.js gzip	39.1 kB	39.1 kB	✓
Overall change	51.4 kB	51.4 kB	✓

Legacy Client Bundles (polyfills)

	zeit/next.js canary	lfades/next.js examples/mobx-no-ssr	Change
polyfills-HASH.js gzip	26.3 kB	26.3 kB	✓
Overall change	26.3 kB	26.3 kB	✓

Client Pages

	zeit/next.js canary	lfades/next.js examples/mobx-no-ssr	Change
_app.js gzip	1.24 kB	1.24 kB	✓
_error.js gzip	3.15 kB	3.15 kB	✓
hooks.js gzip	664 B	664 B	✓
index.js gzip	222 B	222 B	✓
link.js gzip	2.03 kB	2.03 kB	✓
routerDirect.js gzip	279 B	279 B	✓
withRouter.js gzip	278 B	278 B	✓
Overall change	7.86 kB	7.86 kB	✓

Client Pages Modern

	zeit/next.js canary	lfades/next.js examples/mobx-no-ssr	Change
_app.module.js gzip	594 B	594 B	✓
_error.module.js gzip	2.08 kB	2.08 kB	✓
hooks.module.js gzip	370 B	370 B	✓
index.module.js gzip	212 B	212 B	✓
link.module.js gzip	1.48 kB	1.48 kB	✓
routerDirect..dule.js gzip	271 B	271 B	✓
withRouter.m..dule.js gzip	270 B	270 B	✓
Overall change	5.28 kB	5.28 kB	✓

Client Build Manifests

	zeit/next.js canary	lfades/next.js examples/mobx-no-ssr	Change
_buildManifest.js gzip	61 B	61 B	✓
_buildManife..dule.js gzip	61 B	61 B	✓
Overall change	122 B	122 B	✓

Rendered Page Sizes

	zeit/next.js canary	lfades/next.js examples/mobx-no-ssr	Change
index.html gzip	918 B	918 B	✓
link.html gzip	926 B	926 B	✓
withRouter.html gzip	916 B	916 B	✓
Overall change	2.76 kB	2.76 kB	✓

---

Serverless Mode (Decrease detected ✓)

General

	zeit/next.js canary	lfades/next.js examples/mobx-no-ssr	Change
buildDuration	10.5s	10.4s	-66ms
nodeModulesSize	47.7 MB	47.7 MB	✓

Client Bundles (main, webpack, commons)

	zeit/next.js canary	lfades/next.js examples/mobx-no-ssr	Change
main-HASH.js gzip	6.24 kB	6.24 kB	✓
webpack-HASH.js gzip	746 B	746 B	✓
de003c3a9d30..c6c1.js gzip	10.1 kB	10.1 kB	✓
framework.HASH.js gzip	39.1 kB	39.1 kB	✓
Overall change	56.2 kB	56.2 kB	✓

Client Bundles (main, webpack, commons) Modern

	zeit/next.js canary	lfades/next.js examples/mobx-no-ssr	Change
main-HASH.module.js gzip	4.78 kB	4.78 kB	✓
webpack-HASH..dule.js gzip	746 B	746 B	✓
de003c3a9d30..dule.js gzip	6.71 kB	6.71 kB	✓
framework.HA..dule.js gzip	39.1 kB	39.1 kB	✓
Overall change	51.4 kB	51.4 kB	✓

Legacy Client Bundles (polyfills)

	zeit/next.js canary	lfades/next.js examples/mobx-no-ssr	Change
polyfills-HASH.js gzip	26.3 kB	26.3 kB	✓
Overall change	26.3 kB	26.3 kB	✓

Client Pages

	zeit/next.js canary	lfades/next.js examples/mobx-no-ssr	Change
_app.js gzip	1.24 kB	1.24 kB	✓
_error.js gzip	3.15 kB	3.15 kB	✓
hooks.js gzip	664 B	664 B	✓
index.js gzip	222 B	222 B	✓
link.js gzip	2.03 kB	2.03 kB	✓
routerDirect.js gzip	279 B	279 B	✓
withRouter.js gzip	278 B	278 B	✓
Overall change	7.86 kB	7.86 kB	✓

Client Pages Modern

	zeit/next.js canary	lfades/next.js examples/mobx-no-ssr	Change
_app.module.js gzip	594 B	594 B	✓
_error.module.js gzip	2.08 kB	2.08 kB	✓
hooks.module.js gzip	370 B	370 B	✓
index.module.js gzip	212 B	212 B	✓
link.module.js gzip	1.48 kB	1.48 kB	✓
routerDirect..dule.js gzip	271 B	271 B	✓
withRouter.m..dule.js gzip	270 B	270 B	✓
Overall change	5.28 kB	5.28 kB	✓

Client Build Manifests

	zeit/next.js canary	lfades/next.js examples/mobx-no-ssr	Change
_buildManifest.js gzip	61 B	61 B	✓
_buildManife..dule.js gzip	61 B	61 B	✓
Overall change	122 B	122 B	✓

Serverless bundles Overall decrease ✓

	zeit/next.js canary	lfades/next.js examples/mobx-no-ssr	Change
_error.js gzip	232 kB	232 kB	-317 B
404.html gzip	1.32 kB	1.32 kB	✓
hooks.html gzip	959 B	959 B	✓
index.js gzip	232 kB	233 kB	⚠️ +157 B
link.js gzip	243 kB	243 kB	⚠️ +23 B
routerDirect.js gzip	241 kB	241 kB	⚠️ +60 B
withRouter.js gzip	240 kB	240 kB	⚠️ +43 B
Overall change	1.19 MB	1.19 MB	-34 B

[bausk]

I've been using this PR to base my implementation off of and I just wanted to do a sanity check, is the reason to remove SSR from these examples to make them more atomic, or because SSR has any incompatibilities with using MobX in Nextjs? Thanks

[lfades]

@bausk To make them statically optimizable, usually you won't need the store in the server, so there's no need to turn the entire app into slower serverless functions