Refactor WeightSelect component

Remove value prop as it is not required since
the weight is set by the board property.

Migrate board/weight_select_spec to jest

Migrate from karma to jest spec and update
specs for new component.

Prettify weight select files

This applies prettier to the WeightSelect
component and its spec file.

Remove nextTick from WeightSelect

Update WeightSelect component and spec

Reference weight select container by ref instead
of classname.

Update weight select component spec

Add test for canEdit property.

Update weight select components and sepcs

Remove ref used to test div click.

Prettify weight select spec

Remove jquery weight_select component

Remove the old and unused weight_select component
and its reference.

Update weight select specs

Fixes the rspec weight board specs
Improves the jest spec with each.it block

Add changelog entry for component refactor

Remove unused data prop from WeightSelect

Prettify weight_select spec

Apply suggestions to WeightSelect

Changes apply to both the component and spec files

Undo changes made to the old weight_select files

This touches the changes to issues/form.js and the
old jqiery weight_select component.