Refactor system info widget to use labels for clarity

conf.yml

@@ -45,32 +45,31 @@ sections:
     icon: fas fa-server
     widgets:
       - type: system-info
-        options:
-          showHostname: true
-          showOS: true
-          showUptime: true
-          showCPU: true
-          showMemory: true
-          showDisk: true
+        label: Host summary
 
       - type: gl-current-cpu
+        label: CPU (current)
         options:
           hostname: http://nik4nao.home.arpa:61208
 
       - type: gl-current-mem
+        label: Memory (current)
         options:
           hostname: http://nik4nao.home.arpa:61208
 
       - type: gl-disk-space
+        label: Disk Space
         options:
           hostname: http://nik4nao.home.arpa:61208
 
       - type: gl-cpu-history
+        label: CPU (history)
         options:
           hostname: http://nik4nao.home.arpa:61208
           limit: 60
 
       - type: gl-mem-history
+        label: Memory (history)
         options:
           hostname: http://nik4nao.home.arpa:61208
           limit: 80