refactor modules.submitIssue from RESUtils
refactor checkIfSubmitting into smaller functions
using delegated event handling for submit wizard buttons

to enable late-loading the wizard contents
refactor submit wizard markup into templates.html
refactor submit wizard CSS into templates

why the heck not
refactor "known issues" data-loading, rendering, and showing
handle "known feature requests" same as "known issues"
update text on submit wizard landing pane: "what kind of submission"
update text on "report an issue" pane
update text on "request feature" pane
Merge pull request #1598 from andytuba/submitwizard-module

Update /r/resissues+enhancement/submit wizard