improve view management:
- we can pass a negative view index, in this case we count from the end of the list of view
- before creating/changing the view representation, we remove the previous one and reinitialize the node visibility
- each time we save a view, it creates a new one at the end of the list
- "restore" view loads the last view of the list
<% if (options.show_bins) { %>
<div class="Rk-Bins">
<div class="Rk-Bins-Head">
<h2 class="Rk-Bins-Title"><%- translate("Select contents:")%></h2>
<form class="Rk-Web-Search-Form Rk-Search-Form">
<input class="Rk-Web-Search-Input Rk-Search-Input" type="search"
placeholder="<%- translate('Search the Web') %>" />
<div class="Rk-Search-Select">
<div class="Rk-Search-Current"></div>
<ul class="Rk-Search-List"></ul>
</div>
<input type="submit" value=""
class="Rk-Web-Search-Submit Rk-Search-Submit" title="<%- translate('Search the Web') %>" />
</form>
<form class="Rk-Bins-Search-Form Rk-Search-Form">
<input class="Rk-Bins-Search-Input Rk-Search-Input" type="search"
placeholder="<%- translate('Search in Bins') %>" /> <input
type="submit" value=""
class="Rk-Bins-Search-Submit Rk-Search-Submit"
title="<%- translate('Search in Bins') %>" />
</form>
</div>
<ul class="Rk-Bin-List"></ul>
</div>
<% } %> <% if (options.show_editor) { %>
<div class="Rk-Render Rk-Render-<% if (options.show_bins) { %>Panel<% } else { %>Full<% } %>"></div>
<% } %>