Boostrap switch cleanup

Checklist

• I have read the Contribution & Best practices Guide.
• My branch is up-to-date with the upstream master branch.
• The tests pass locally with my changes.
• I have added tests that prove my fix is effective or that my feature works(if appropriate).

Short description of what this resolves/which issues does this fix?:

• Repetitive arguments on boostrapSwitch instances
• bootstrapSwitch can only be set up on page load

Changes proposed in this pull request:

• DRY up the configuration using default values
• Set up an external function for setting up a bootstrapSwitch