OTT-918 php warning for laravel shortcodes

[nazar-boyko-vshred]

No description provided.

[andyov17]

The view data fix (a9c2295) in this PR works well
if you're using another view factory (Flux in my case), the view data was being overwritten, and so the context was lost

@foreach($foo as $bar)
    [firstShortcode] {{-- $bar exists--}}
    <flux:fieldset></flux:fieldset> {{-- sets it's own data --}}
    [secondShortcode {{-- $bar missing as flux set data --}}
@endforeach

[andyov17]

@nazar-boyko-vshred could you please merge master into this so it supports later Laravel versions as it was forked form quite an old version? Then this branch could be used until it's been approved.