Wrap env description in quotes

[nkaretnikov]

Fixes #274.

[nkaretnikov]

The error comes from the YAML parser. I wrap the description value in quotes before passing it further.

This avoids YAML syntax errors like this (this example won't work in the old UI either because it's invalid syntax):

description: this is invalid : because it has two colons and no quotes

Verified that links and colons work now.

New UI:

Old UI (same env):

[nkaretnikov]

Note: this will still fail to parse a description containing a single quote (because it will be parsed as the terminating quote, leading to a syntax error). I've decided not to address this as part of this PR.

[pierrotsmnrd]

Looks good to me. Tested locally, works.

[kcpevey]

Note: this will still fail to parse a description containing a single quote (because it will be parsed as the terminating quote, leading to a syntax error). I've decided not to address this as part of this PR.

@nkaretnikov That works for me. Can you open up an issue to track?