title: Rstudio shiny not finding image in www folder
body: <p>I've got this code from a previous working example:</p>
  
  <pre><code>page_name="logo"
  shinyUI(
    pageWithSidebar(
  
      headerPanel('Sortable list'),
      sidebarPanel(
        tags$head(tags$script(src = "js/jquery-ui.min.js")),
        wellPanel(
          uiOutput('sortable_rui')
        ),
        wellPanel(
          uiOutput('sortable2_rui')
                  ),
        wellPanel(
                  h5(page_name),
                  img(src=paste0(page_name,".png")),
                  img(src=paste0("www/",page_name,".png"))
                  )
      ),
  
      mainPanel(
        tableOutput('showData'),
        verbatimTextOutput('showorder'),
        tableOutput('showData2'),
        verbatimTextOutput('showorder2')
      )
    )
  )
  </code></pre>
  
  <p>And here is what I've got inside the <code>www/</code> folder:</p>
  
  <pre><code>avilella@ubuntu64:/var/shiny-server/www/sortable/www$ ls -l
  total 76
  drwxrwxr-x 2 avilella avilella  4096 Jan 30 09:26 js
  -rwxrwx--- 1 avilella avilella 67022 Feb 10 14:47 logo.png
  -rw-rw-r-- 1 avilella avilella   299 Jan 30 09:26 sort.css
  </code></pre>
  
  <p>Yet it's not finding the logo inside <code>www/</code>:</p>
  
  <p><img src="https://i.stack.imgur.com/Y3Cfy.png" alt="enter image description here"></p>
  
  <p>Any ideas?</p>