Adding a branch permission with a branch name that can be interpreted as a number will prevent editing of the branch permission

Issue Summary

If a branch permission is created at the project level, a user will be unable to edit the branch permission if the branch name that was entered can be interpreted as a number.

Steps to Reproduce

1. Go to <base_URL>/plugins/servlet/branch-permissions/<project_key>
2. Add a branch permission
3. Choose branch name and enter a branch name that can be interpreted as a number eg. 555.55

Expected Results

After creating the branch permission a user should be able to click the 'pencil' icon and edit the branch permission

Actual Results

• The edit dialog does not get displayed
• We see the following error in the browser's dev panel console:

  Uncaught The typeof 555.55 is number but expected it to be string
  

Workaround

• Add a new permission with the same branch name
• A warning stating A branch permission already exists for 555.55 will be displayed with a hyperlink to edit the existing branch permission
• Click the link twice and the branch permission can be edited from there