[#MmLRZ2E2] remove testling badges

testling isnt working, so removing the testling badges

Branch: MmLRZ2E2-development
[#MmLRZ2E2] add helpful error message for empty form

Branch: MmLRZ2E2-development
[#MmLRZ2E2] add template option to override template

keeping overrideTemplate as another option for now, but may decide to remove this later

Branch: MmLRZ2E2-development
[#MmLRZ2E2] simplify hbsfy require

remove uncessary option

Branch: MmLRZ2E2-development
[#MmLRZ2E2] add repo field, remove extra handlebars dep

Branch: MmLRZ2E2-development
[#MmLRZ2E2] add tests for template option, rm overrideTemplate

Branch: MmLRZ2E2-development
[#MmLRZ2E2] update default template markup

add label, switch to button instead of submit input

Branch: MmLRZ2E2-development
[#MmLRZ2E2] remove responseElement from test

add a separate test for this later, when tests are written for custom templates

Branch: MmLRZ2E2-development