Open moderation links in the same window

Note that, unlike what we did in the admin section we're opening links
to budget investments on the same tab. There are two reasons for it; the
first one is that, in this case, there are no filters in the moderation
section that are lost after editing an investment, and the second one is
that, in this context, administrators usually don't go to the investment
in order to edit it, so they can just check something and use the
browser's back button to go back.

app/views/moderation/budgets/investments/index.html.erb

@@ -14,7 +14,7 @@
             <%= link_to investment.title, admin_budget_budget_investment_path(
                                             budget_id: investment.budget_id,
                                             id: investment.id
-                                          ), target: "_blank" %>
+                                          ) %>
             <br>
             <span class="date"><%= l investment.updated_at.to_date %></span>
             <span class="bullet">&nbsp;&bull;&nbsp;</span>

app/views/moderation/comments/index.html.erb

@@ -12,7 +12,7 @@
         <tr id="comment_<%= comment.id %>">
           <td>
             <%= comment.commentable_type.constantize.model_name.human %> -
-            <%= link_to comment.commentable.title, commentable_path(comment), target: "_blank" %>
+            <%= link_to comment.commentable.title, commentable_path(comment) %>
             <br>
             <span class="date"><%= l comment.updated_at.to_date %></span>
             <span class="bullet">&nbsp;&bull;&nbsp;</span>

app/views/moderation/debates/index.html.erb

@@ -11,7 +11,7 @@
       <% @debates.each do |debate| %>
         <tr id="debate_<%= debate.id %>">
           <td>
-            <%= link_to debate.title, debate, target: "_blank" %>
+            <%= link_to debate.title, debate %>
             <br>
             <span class="date"><%= l debate.updated_at.to_date %></span>
             <span class="bullet">&nbsp;&bull;&nbsp;</span>

app/views/moderation/proposal_notifications/index.html.erb

@@ -11,7 +11,7 @@
       <% @proposal_notifications.each do |proposal_notification| %>
         <tr id="proposal_notification_<%= proposal_notification.id %>">
           <td>
-            <%= link_to proposal_notification.title, proposal_notification, target: "_blank" %>
+            <%= link_to proposal_notification.title, proposal_notification %>
             <br>
             <span class="date"><%= l proposal_notification.updated_at.to_date %></span>
             <br>

app/views/moderation/proposals/index.html.erb

@@ -11,7 +11,7 @@
       <% @proposals.each do |proposal| %>
         <tr id="proposal_<%= proposal.id %>">
           <td>
-            <%= link_to proposal.title, proposal, target: "_blank" %>
+            <%= link_to proposal.title, proposal %>
             <br>
             <span class="date"><%= l proposal.updated_at.to_date %></span>
             <span class="bullet">&nbsp;&bull;&nbsp;</span>