allow empty strings in shopURL

[Akarshit]

Resolves #291
Impact: minor
Type: bugfix

Issue

The SimpleSchema was cleaning the object of empty string before saving it. Also the RegEx was not allowing empty strings to pass.

Solution

1. Configured cleaning to not remove empty strings.
2. Modified regex to allow empty string.

Breaking changes

None expected

Testing

1. Login as Admin
2. Enter a URL for the store logo and save it. The top left icon should update based on the URL you entered
3. Remove the URL and hit Save, the logo should default back to the Reaction Commerce logo.

[nnnnat]

@Akarshit can you sign your commit and force push?

[Akarshit]

Yup, will do that.

…

On Wed, Jan 27, 2021 at 8:10 AM Nat Hamilton ***@***.***> wrote: @Akarshit <https://github.com/Akarshit> can you sign your commit and force push? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#339 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AB3HFLPADDYNDY3W7EKV23LS4AUFJANCNFSM4WT5QR3Q> .

[jrw421]

Looks good to me.

[Akarshit]

Only updated the commit message.