nodeparamview: separated the NodeParamView body into a separate widget for nesting

Will allow display of NodeInputArrays.

app/node/block/block.cpp

@@ -321,8 +321,11 @@ void Block::Retranslate()
 {
   Node::Retranslate();
 
+  name_input_->set_name(tr("Name"));
   length_input_->set_name(tr("Length"));
   media_in_input_->set_name(tr("Media In"));
+  enabled_input_->set_name(tr("Enabled"));
+  speed_input_->set_name(tr("Speed"));
 }
 
 NodeInput *Block::length_input() const

app/node/block/transition/transition.cpp

@@ -58,6 +58,8 @@ NodeInput *TransitionBlock::in_block_input() const
 
 void TransitionBlock::Retranslate()
 {
+  Block::Retranslate();
+
   out_block_input_->set_name(tr("From"));
   in_block_input_->set_name(tr("To"));
 }