Allow user to set class for form_group_class

[galiteintechnologies]

To customise form_group_class block, new parameter named class has been used. for ex.

- property: 'name'
  label: 'My name'
  class: 'col-sm-8'
  type: 'text'
  css_class: 'col-sm-4'
  type_options: { attr: {'class': 'col-sm-3 ', 'style': 'background-color:#f9f4d1'}, required: false }

will generate html like:

<div class="col-xs-12 col-sm-4">
    <div class="form-group field-input">
        <label class="col-sm-4 control-label" for="name">My name</label>
        <div class="col-sm-8">
            <input type="text" style="background-color:#f9f4d1" id="name" name="name" class="form-control col-sm-3">
        </div>
    </div>
</div>

I have tried to resolve this issue Ref: https://github.com/javiereguiluz/EasyAdminBundle/issues/1336

[shakaran]

@NexuslinkServices Thanks! LGTM and very elegant resolved ;) I would like see this merged on master soon ;)

[shakaran]

@javiereguiluz ping you here as BUMP the PR, so maybe you can merge to master and make another quick and great release this week ;)

[shakaran]

@javiereguiluz any chance that this PR could be merged to master in the next days? There are something to modify it or wrong for avoid the merge?

[shakaran]

@javiereguiluz I am waiting for a merge almost 6 months here (it seems a quick fix), please could you give at least your impressions about if this is ok to merge?

[shakaran]

@javiereguiluz almost a year birthday for merge or review this Pull Request. I know that you are busy with Symfony 4, but yeah, a bit dissapointing.

[javiereguiluz]

I'm really sorry but I must close this proposal as "won't fix". I apologize for not having closed it earlier and I understand if you are angry about this decision. As explained in #2059, we are going to make trascendental changes very soon to this bundle, so we must merge or close every pull request first.