Migration regressions in voting tab

[slaweet]

There are some issues in voting tab after the migration

• It doesn't work for "new" account. Regression of New account doesn't load delegates #288)
• Search makes a server request on each key stroke. Before there was debounce: 200 https://github.com/LiskHQ/lisk-nano/blob/v1.0.0/src/components/delegates/delegates.pug#L8 Often response from earlier request replaces later one, e.g. when typing genesis_42: genesis_4 has more results on devnet and thus takes longer than genesis_42 and replaces the results.
• Vote dialog button label used to say "Confirm"
• Vote dialog title used to say "Vote for delegates"

The first two issues cause failure of respective @ignored e2e tests in features/voting.feature