Apply validation state colors to form group help blocks

[johnberberich]

This will apply AdminLTE's custom form validation state colors to the help text (.help-block) within a form group. Prior to this change, help text would use Bootstrap's default colors.

This change also includes a few examples of help text added to pages/forms/general.html. Here is an snippet of a form group with some help text:

<div class="form-group has-error">
  <label class="control-label" for="inputError"><i class="fa fa-times-circle-o"></i> Input with
                    error</label>
  <input type="text" class="form-control" id="inputError" placeholder="Enter ...">
  <span class="help-block">Help block with error</span>
</div>

See Bootstrap's documentation for more information about help text.

[almasaeed2010]

Great addition! Thanks!

[johnberberich]

No problem. Thanks for your great work on this theme!