:bug: Fix regression in indent-guide in React editor

Previously the indent guide was always showing on the whitespace only
lines in the React editor. This is the same behavior as in the old
editor and had the same fix, just ported to `LinesComponent`.

See: 314833bbac33bdb7c45594550d8d10559dd2de9c

Fixes #2274
Add failing test for #2274

Tested first on a branch off of `master` to ensure that it would
actually fail :grinning:
Upgrade to symbols-view@0.60
Upgrade to archive-view@0.34
:memo: Mention downloading .zip Windows release
Upgrade to language-coffee-script@0.26
Special case quoting of certain explorer args

This is required for things like:

`explorer.exe /root,C:\a\folder` to spawn correctly.

Refs atom/tree-view#180
Upgrade to tree-view@0.110.0
Remove stray #
Merge pull request #2968 from atom/ks-dont-quote-explorer-arguments

Don't quote certain explorer arguments
Support multiple separators in context menu
Map ctrl-, to application:show-settings on Windows

Refs #2962
Upgrade to settings-view@0.134.0
Use repository URL in crashed message

Now that the repository is public, issues there are better than
emailing the help address.
Merge pull request #2950 from lee-dohm/ld-bug-2274

:bug: Fix regression in indent-guide in React editor
Indentation respects tab stops now, fix #2672
Add specs
Upgrade snippets to fix specs with tab stops
Fix spec
Merge pull request #2943 from atom/bo-ms-fix-tab-stops

Fix tab stops for soft tabs