Alt+Home/End to navigate line, not subline

[ProgerXP]

Currently, Alt+Home/End put the caret to the beginning/end of the wrapped subline, Shift+Alt+Home toggles between selection to line start with/out indentation, and Shift+Alt+End selects to line end.

Change these to ignore indentation and subline boundaries, always putting caret/selecting to line start/end.

Example (a single wrapped line with 3 sublines, . = space):

..abcd
ef|gh
ij

Alt+Home: |..abcd Shift+Alt+Home: [..abcd ef]gh Alt+End: ij| Shift+Alt+End: [gh ij] (matches current behaviour)

[cshnik]

Done.