[Graph] refresh sigma after settings are set

Also, fix label size to be "fixed".

src/Gargantext/Components/Graph.purs

@@ -153,7 +153,7 @@ sigmaSettings =
   , defaultHoverLabelBGColor: "#fff"
   , defaultHoverLabelColor: "#000"
   , defaultLabelColor: "#000"         -- labels text color
-  , defaultLabelSize: 3.0                -- (old tina: showLabelsIfZoom)
+  , defaultLabelSize: 14.0                -- (old tina: showLabelsIfZoom)
   , defaultNodeBorderColor: "black"   -- <- if nodeBorderColor = 'default'
   , defaultNodeColor: "#ddd"
   , drawEdgeLabels: true
@@ -165,12 +165,12 @@ sigmaSettings =
   , font: "Droid Sans"                -- font params
   , fontStyle: "bold"
   , hideEdgesOnMove: true
-  , labelSize : "proportional"
+  , labelSize : "fixed"
   , labelSizeRatio: 2.0               -- label size in ratio of node size
   , labelThreshold: 2.0               -- min node cam size to start showing label
-  , maxEdgeSize: 0.0
+  , maxEdgeSize: 1.0
   , maxNodeSize: 30.0
-  , minEdgeSize: 0.0              -- in fact used in tina as edge size
+  , minEdgeSize: 1.0              -- in fact used in tina as edge size
   , minNodeSize: 5.0
   , mouseEnabled: true
   , mouseZoomDuration: 150.0

src/Gargantext/Components/GraphExplorer/SlideButton.purs

@@ -61,8 +61,8 @@ labelSizeButton sigmaRef state =
   sizeButton {
       state: state
     , caption: "Label Size"
-    , min: 1.0
-    , max: 4.0
+    , min: 5.0
+    , max: 30.0
     , onChange: \e -> do
       let mSigma = Sigmax.readSigma <$> R.readRef sigmaRef
       let newValue = readFloat $ R2.unsafeEventValue e

src/Gargantext/Hooks/Sigmax/Sigma.purs

@@ -97,7 +97,9 @@ bind_ s e h = runEffectFn3 _bind s e (mkEffectFn1 h)
 foreign import _bind :: forall e. EffectFn3 Sigma String (EffectFn1 e Unit) Unit
 
 setSettings :: forall settings. Sigma -> settings -> Effect Unit
-setSettings = runEffectFn2 _setSettings
+setSettings sigma settings = do
+  runEffectFn2 _setSettings sigma settings
+  refresh sigma
 
 foreign import _setSettings :: forall settings. EffectFn2 Sigma settings Unit