[docs] Small changes

[oliviertassinari]

• [docs] Remove strict mode note 8ad2bdf: All the components should be strict mode ready.
  It's our target. Long term, this note is not needed. We can use the GitHub issue instead to track our progress.
• [docs] Open color tool in a new tab ef3462a
• [docs] Keep the same URL for July than other months a0487cb: I think that Matt is right. Let's be consistent.
• [docs] Create awareness for the different imports d63e9ca
• [docs] Solve one no match with Algolia a31ea6e
• [core] Export default at the component creation 068fa72
• [docs] Avoid the creation of an intermediary component ec443c7
• [docs] Fix tooltip warning on mobile cfdec71
• [docs] Add new synonyms 45c3c92

[mui-pr-bot]

Details of bundle changes.

Comparing: 10ed7cf...3dc658a

bundle	parsed diff	gzip diff	prev parsed	current parsed	prev gzip	current gzip
@material-ui/core	0.00%	0.00%	329,178	329,178	90,019	90,019
@material-ui/core/Paper	0.00%	0.00%	68,843	68,843	20,523	20,523
@material-ui/core/Paper.esm	0.00%	0.00%	62,217	62,217	19,249	19,249
@material-ui/core/Popper	0.00%	0.00%	28,468	28,468	10,177	10,177
@material-ui/core/Textarea	0.00%	0.00%	5,094	5,094	2,135	2,135
@material-ui/core/TrapFocus	0.00%	0.00%	3,834	3,834	1,614	1,614
@material-ui/core/styles/createMuiTheme	0.00%	0.00%	16,386	16,386	5,826	5,826
@material-ui/core/useMediaQuery	0.00%	0.00%	2,541	2,541	1,059	1,059
@material-ui/lab	0.00%	0.00%	153,211	153,211	46,742	46,742
@material-ui/styles	0.00%	0.00%	51,561	51,561	15,339	15,339
@material-ui/system	0.00%	0.00%	15,658	15,658	4,360	4,360
Button	0.00%	0.00%	78,847	78,847	24,093	24,093
Modal	0.00%	0.00%	14,346	14,346	5,011	5,011
Portal	0.00%	0.00%	2,907	2,907	1,318	1,318
Rating	0.00%	0.00%	70,206	70,206	21,925	21,925
Slider	0.00%	0.00%	74,539	74,539	23,108	23,108
colorManipulator	0.00%	0.00%	3,904	3,904	1,543	1,543
docs.landing	0.00%	0.00%	53,311	53,311	13,786	13,786
docs.main	+0.01% 🔺	+0.02% 🔺	599,123	599,205	191,150	191,181
packages/material-ui/build/umd/material-ui.production.min.js	0.00%	0.00%	300,169	300,169	86,407	86,407

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