Fixes #71 Enables inline errors for fields

[OwenMelbz]

Setting global defaults

/config/backpack/crud.php

    'errors_inline' => false,
    'errors_grouped' => true,

Setting crud level errors

// enabled/disables grouped errors at the top
$this->crud->enableGroupedErrors();
$this->crud->disableGroupedErrors();

// enables/disables inline errors
$this->crud->enableInlineErrors();
$this->crud->disableInlineErrors();

// check if grouped messages are enabled
$this->crud->isGroupedErrorsEnabled();

// check if inline messages are enabled
$this->crud->isInlineErrorsEnabled();

This addresses #71

[tabacitu]

@OwenMelbz - excellent feature, this one.

Please note:

• I've made some slight changes to the syntax (errorsGrouped into groupedErrors, small things like that);
• I've made it play nice with the tabs functionality too (tabs also get highlighted if they have fields that errored)

Merging it into the 3.2 branch.

Cheers, thanks a lot!