Bug: Jira module title formatting

[timhwang21]

What's broken?

My config (relevant parts):

    jira:
      title: " Jira"
      projects: ["Persona"]

Broken part in code: modules/jira/widget.go#L80

Problem: widget.settings.project is an array, so gets stripped out during printing (I assume because it's treated as a color code).

(My personal suggested fix would just be to remove this extra stuff, it doesn't seem useful to me and the user can always put the project name in title if they want. Or maybe it can show issue count after the hyphen. Would be happy to file a PR either way!)

Nit 1: the code documentation says that the project(s) are passed as:

	projects                []string `help:"An array of projects to get data from"`

...but it is in fact project and not projects.

Nit 2: there is no whitespace between the word Jira and the hyphen, which I don't think looks good. (The Hackernews module has a space before and after the hyphen.)