Fix some issues related to `File issue` page
Fix some issues related to File issue
page:
There was no need for these variables in issue.html to be globally declared. Furthermore, the way 'select' was declared was causing a TypeError: "Assignment to constant variable" when a row to a "Bugs" table in "File issue" page was added.
In "File issue" page, when issue_id template variable was set to None, there was a warning in browser console 'The specified value "None" cannot be parsed, or is out of range'.