[core] Small fixes

[oliviertassinari]

• [Pagination] Improve router integration c3e78b3: Fix the 404 links (/cars) reported by Moz's crawlers. Fix the active displayed page when opening a link in a new tab (cmd + click).
• [theme] Remove ex unit support c6d9738. I don't think that we should aim to support it https://stackoverflow.com/questions/918612/what-is-the-value-of-the-css-ex-unit.
• [docs] Replace 'Material UI' with 'Material-UI' ab6f843. I have seen this in the translations too, fixed it on Crowdin.
• [docs] Add new course in learning section 9e6932d. It has great users' reviews.
• [test] Fix font loading logic 1c6fe61. I couldn't stand this flaky screenshot any more: https://www.argos-ci.com/mui-org/material-ui/builds/61150.

The solution is simple, it's called, read the documentation. I should have been more rigorous in the initial implementation (#12142).

[mui-pr-bot]

Details of bundle changes.

Comparing: deb31c7...15910a6

bundle	Size Change	Size	Gzip Change	Gzip
@material-ui/core[umd]	▼ -62 B (-0.02% )	318 kB	▼ -8 B (-0.01% )	92.2 kB
@material-ui/core	▼ -59 B (-0.02% )	362 kB	▼ -11 B (-0.01% )	99 kB
docs.main	▲ +20 B (0.00% )	604 kB	▲ +7 B (0.00% )	196 kB
@material-ui/lab	--	194 kB	--	57.3 kB
@material-ui/styles	--	51.4 kB	--	15.4 kB
@material-ui/system	--	16.5 kB	--	4.32 kB
Alert	--	83.8 kB	--	26.3 kB
AlertTitle	--	64.5 kB	--	20.3 kB
AppBar	--	64.4 kB	--	20.2 kB
Autocomplete	--	132 kB	--	41.5 kB
Avatar	--	65.6 kB	--	20.7 kB
AvatarGroup	--	62.7 kB	--	19.7 kB
Backdrop	--	68.2 kB	--	21.1 kB
Badge	--	65.7 kB	--	20.4 kB
BottomNavigation	--	62.7 kB	--	19.7 kB
BottomNavigationAction	--	75.9 kB	--	24 kB
Box	--	72.2 kB	--	21.9 kB
Breadcrumbs	--	80.8 kB	--	25.4 kB
Button	--	80.1 kB	--	24.5 kB
ButtonBase	--	74.4 kB	--	23.3 kB
ButtonGroup	--	83.6 kB	--	25.6 kB
Card	--	63.2 kB	--	19.8 kB
CardActionArea	--	75.5 kB	--	23.8 kB
CardActions	--	62.4 kB	--	19.6 kB
CardContent	--	62.3 kB	--	19.5 kB
CardHeader	--	65.4 kB	--	20.6 kB
CardMedia	--	62.7 kB	--	19.7 kB
Checkbox	--	83.4 kB	--	26.3 kB
Chip	--	83 kB	--	25.4 kB
CircularProgress	--	64.4 kB	--	20.3 kB
ClickAwayListener	--	3.91 kB	--	1.55 kB
Collapse	--	68.4 kB	--	21.2 kB
colorManipulator	--	3.88 kB	--	1.52 kB
Container	--	63.5 kB	--	19.9 kB
CssBaseline	--	62.3 kB	--	19.6 kB
Dialog	--	83.4 kB	--	26 kB
DialogActions	--	62.4 kB	--	19.6 kB
DialogContent	--	62.6 kB	--	19.6 kB
DialogContentText	--	64.4 kB	--	20.2 kB
DialogTitle	--	64.6 kB	--	20.3 kB
Divider	--	63 kB	--	19.8 kB
docs.landing	--	56.8 kB	--	15.6 kB
Drawer	--	85.2 kB	--	25.9 kB
ExpansionPanel	--	72.7 kB	--	22.7 kB
ExpansionPanelActions	--	62.4 kB	--	19.6 kB
ExpansionPanelDetails	--	62.3 kB	--	19.5 kB
ExpansionPanelSummary	--	78.5 kB	--	24.8 kB
Fab	--	77.2 kB	--	24.1 kB
Fade	--	23.6 kB	--	8.01 kB
FilledInput	--	74 kB	--	23 kB
FormControl	--	64.8 kB	--	20.2 kB
FormControlLabel	--	65.9 kB	--	20.6 kB
FormGroup	--	62.3 kB	--	19.6 kB
FormHelperText	--	63.7 kB	--	20 kB
FormLabel	--	63.8 kB	--	19.8 kB
Grid	--	65.4 kB	--	20.5 kB
GridList	--	62.8 kB	--	19.7 kB
GridListTile	--	64.1 kB	--	20.1 kB
GridListTileBar	--	63.6 kB	--	19.9 kB
Grow	--	24.2 kB	--	8.22 kB
Hidden	--	66.3 kB	--	20.8 kB
Icon	--	63.1 kB	--	19.8 kB
IconButton	--	76.6 kB	--	23.9 kB
Input	--	73 kB	--	22.8 kB
InputAdornment	--	65.4 kB	--	20.6 kB
InputBase	--	71.1 kB	--	22.3 kB
InputLabel	--	65.7 kB	--	20.5 kB
LinearProgress	--	65.7 kB	--	20.5 kB
Link	--	67 kB	--	21.1 kB
List	--	62.7 kB	--	19.6 kB
ListItem	--	77.6 kB	--	24.2 kB
ListItemAvatar	--	62.5 kB	--	19.5 kB
ListItemIcon	--	62.5 kB	--	19.6 kB
ListItemSecondaryAction	--	62.3 kB	--	19.5 kB
ListItemText	--	65.3 kB	--	20.5 kB
ListSubheader	--	63.1 kB	--	19.8 kB
Menu	--	89.1 kB	--	27.4 kB
MenuItem	--	78.6 kB	--	24.5 kB
MenuList	--	66.4 kB	--	20.8 kB
MobileStepper	--	68.2 kB	--	21.4 kB
Modal	--	14.5 kB	--	5.04 kB
NativeSelect	--	77.3 kB	--	24.4 kB
NoSsr	--	2.19 kB	--	1.04 kB
OutlinedInput	--	75 kB	--	23.4 kB
Pagination	--	85.6 kB	--	26.3 kB
PaginationItem	--	81.2 kB	--	25 kB
Paper	--	62.7 kB	--	19.6 kB
Popover	--	83.5 kB	--	25.8 kB
Popper	--	28.8 kB	--	10.3 kB
Portal	--	2.92 kB	--	1.3 kB
Radio	--	84.4 kB	--	26.6 kB
RadioGroup	--	64.8 kB	--	20.1 kB
Rating	--	70.8 kB	--	22.8 kB
RootRef	--	4.24 kB	--	1.64 kB
ScopedCssBaseline	--	63.2 kB	--	19.9 kB
Select	--	117 kB	--	34.7 kB
Skeleton	--	63.3 kB	--	20 kB
Slide	--	25.7 kB	--	8.74 kB
Slider	--	77 kB	--	24.2 kB
Snackbar	--	75.7 kB	--	23.7 kB
SnackbarContent	--	63.9 kB	--	20.1 kB
SpeedDial	--	86.7 kB	--	27.3 kB
SpeedDialAction	--	119 kB	--	37.6 kB
SpeedDialIcon	--	64.9 kB	--	20.3 kB
Step	--	63 kB	--	19.8 kB
StepButton	--	82.8 kB	--	26.2 kB
StepConnector	--	63.1 kB	--	19.9 kB
StepContent	--	69.5 kB	--	21.8 kB
StepIcon	--	65 kB	--	20.3 kB
StepLabel	--	69 kB	--	21.7 kB
Stepper	--	65.2 kB	--	20.6 kB
styles/createMuiTheme	--	16.6 kB	--	5.85 kB
SvgIcon	--	63.4 kB	--	19.8 kB
SwipeableDrawer	--	92.6 kB	--	28.9 kB
Switch	--	82.6 kB	--	26 kB
Tab	--	76.7 kB	--	24.3 kB
Table	--	62.9 kB	--	19.7 kB
TableBody	--	62.4 kB	--	19.5 kB
TableCell	--	64.4 kB	--	20.3 kB
TableContainer	--	62.3 kB	--	19.5 kB
TableFooter	--	62.5 kB	--	19.5 kB
TableHead	--	62.4 kB	--	19.5 kB
TablePagination	--	144 kB	--	42 kB
TableRow	--	62.8 kB	--	19.7 kB
TableSortLabel	--	77.8 kB	--	24.4 kB
Tabs	--	85.8 kB	--	27.2 kB
TextareaAutosize	--	5.24 kB	--	2.18 kB
TextField	--	126 kB	--	36.7 kB
ToggleButton	--	76.6 kB	--	24.2 kB
ToggleButtonGroup	--	63.5 kB	--	20 kB
Toolbar	--	62.7 kB	--	19.7 kB
Tooltip	--	103 kB	--	32.4 kB
TreeItem	--	74.3 kB	--	23.5 kB
TreeView	--	67 kB	--	21.1 kB
Typography	--	64 kB	--	20 kB
useAutocomplete	--	14.8 kB	--	5.34 kB
useMediaQuery	--	2.58 kB	--	1.06 kB
Zoom	--	23.6 kB	--	8.12 kB

Generated by 🚫 dangerJS against 15910a6