Add escapeQuote and fix error on js addGroup function

[Imaginaerum]

Add escapeQuote and fix error on js addGroup function.

[vkublytskyi]

@Imaginaerum, thank you for contribution.

Please note that your fix removes translation. Even if these strings are translated later by JavaScript we can not remove PHP translation now as this will be breaking incompatible change.

Also for escaping inside JavaScript strings escapeJsQuote instead of escapeQuote should be used.

So the correct code will be:
'<?php /* @escapeNotVerified */ echo $block->escapeJsQuote(__('...')) ?>'

Please correct your code and we will merge PR

[Imaginaerum]

@vkublytskyi thanks for your reply.

I change my code.

[vrann]

@Imaginaerum please sync the PR with the latest develop branch.

[vrann]

@Imaginaerum also, escapeJsQuote method was deprecated. Please use escapeJs method instead.
Doing so, please remove /* @escapeNotVerified */ comment next to the method call. It is needed to highlight unescaped string to static tests, which will not be the case anymore.

[vrann]

@Imaginaerum please feel free to re-open PR once the changes are made.