Remove 'cmd-t' / 'ctrl-t' for 'toggle-file-finder'

[mehcode]

Replaces #92 and #78
See #92 (comment)

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The ctrl- and cmd- keybindings are a precious resource. Having two for the same package is 🐼.

However I agree that we'd need to remove cmd-t / ctrl-t

• We have ctrl-shift-p for the command panel
• We could have ctrl-alt-p for a project switcher (the spec runner doesn't need a keyboard shortcut as the average user doesn't care)
• It mimics sublime in a very obvious way

[lee-dohm]

Before this is merged, we should probably scour the documentation to ensure that there are no references to Cmd/Ctrl+T.

[mnquintana]

Also just a note for after this is merged: we should probably add a note in the release notes for the version of Atom that incorporates this change about how to re-add this keybinding for those who miss it (and you know there will be people who'll miss it)

[winstliu]

Still 👎 on removing the -T keybinding for the reasons listed in #92. Ctrl+T is newtab in every major web browser, t is the fuzzy finder in Github...

[mehcode]

The big reason that sways me in favor of cmd-p over cmd-t is that all the similar bindings you mention are new tab/document/file, find file. cmd-p is far more than just find file, it's not quite to sublime's level of "goto anything" but its close.

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With that said, I really don't care. I just want to get rid of one of them. I don't mind updating the PRs if the decision is in the reverse.