Improve slideshows in templates

With that change templators will can resize images inslide slideshow - it's usefull for example in fanccybox slideshows when you wan't show for user big foto in full screen but you don't want send for him oryginial image (sometimes very big)

OLD:
````http://{{ $gimme->publication->site }}/{{ $item->image->original }}````

NEW:
````http://{{ $gimme->publication->site }}/get_img?ImageWidth=800&ImageId={{ $item->image->id }}````

OLD:
```
{{ foreach $gimme->article->slideshows as $slideshow }}
      <h5 style="margin-bottom: 10px;">{{ $slideshow->headline }}</h5>
      {{ assign var="counter" value=0 }}              
      {{ foreach $slideshow->items as $item }}      
        {{ assign var="counter" value=$counter+1 }}
        <a style="float: left; margin: 0px 10px 10px 0px;" href="http://{{ $gimme->publication->site }}/{{ $item->image->original }}" rel="gallery" class="sixecol gallery_thumbnail{{ if $counter%6 == 0 }} last{{ /if }}" title="{{ $item->caption }}" />
            <img src="{{ $item->image->src }}" width="90" height="90" alt="{{ $item->caption }}" style="max-width: 100%" rel="resizable" />
        </a>                         
      {{ /foreach }}
      <div style="clear:both"></div>
{{ /foreach }}
```

NEW:
```
{{ foreach $gimme->article->slideshows as $slideshow }}
      <h5 style="margin-bottom: 10px;">{{ $slideshow->headline }}</h5>
      {{ assign var="counter" value=0 }}              
      {{ foreach $slideshow->items as $item }}      
      {{ assign var="counter" value=$counter+1 }}
      <a style="float: left; margin: 0px 10px 10px 0px;" href="http://{{ $gimme->publication->site }}/get_img?ImageWidth=800&ImageId={{ $item->image->id }}" rel="gallery" class="sixecol gallery_thumbnail{{ if $counter%6 == 0 }} last{{ /if }}" title="{{ $item->caption }}" />
          <img data-id="{{ $item->image->id }}" src="{{ $item->image->src }}" width="90" height="90" alt="{{ $item->caption }}" style="max-width: 100%" rel="resizable" />
      </a>                         
      {{ /foreach }}
      <div style="clear:both"></div>
{{ /foreach }}
```