Multiple shortcuts collide with standard browser shortcuts in Win/Linux

[skatkov]

Same issue as with CTRL+L #5

CTRL+S collides with "save file.." shortcut on Win/Linux machines, a standard shortcut for many browsers.

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I also went through otheer shortcuts on my Linux machine and notice that these don't work too:

Prev in Calendar view: Control + ↑ (in addition to K)
Next in Calendar view: Control + ↓ (in addition to J)

Control + ↑ or ↓ -> moves window lower/higher shortcut
Control + j -> jump to address bar

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maybe we need different approach to shortcuts for osx/linux/windows? Seems hard to find "common" shortcut that are not used alreay.

For mac we can leave: CTRL + L, CTRL + S, CTRL + J

but in windows and Linux we can switch CTRL to ALT, to have: ALT + L, ALT + S, ALT + J

[yohasebe]

Changed search-mode switch shortcut from Ctrl + S to to Ctrl + Shift + M. I hope it will do.

[skatkov]

I thought, that we might need to have two sets of shortcuts depending on OS. It seems, that there are many instances, then shortcuts don't make sense in Windows/Linux.

[yohasebe]

The current shortcut key combinations may not be very organized. But as long as there are no major confclicts, I think they are good for the time being.