Add CSB version support to version selector, app routing, and Dockerfile

CSB/19_Psalms/Chapter_21.md

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+Psalm 21The King's Victory
+
+1. Lord, the king finds joy in your strength.
+How greatly he rejoices in your victory!
+
+2. You have given him his heart's desire
+and have not denied the request of his lips.Selah
+
+3. For you meet him with rich blessings;
+you place a crown of pure gold on his head.
+
+4. He asked you for life, and you gave it to him--
+length of days forever and ever.
+
+5. His glory is great through your victory;
+you confer majesty and splendor on him.
+
+6. You give him blessings forever;
+you cheer him with joy in your presence.
+
+7. For the king relies on 
+the Lord;
+through the faithful love of the Most High
+he is not shaken.
+
+8. Your hand will capture all your enemies;
+your right hand will seize those who hate you.
+
+9. You will make them burn
+like a fiery furnace when you appear;
+the Lord will engulf them in his wrath,
+and 
+fire will devour them.
+
+
+10. You will wipe their progeny from the earth
+and their offspring from the human race.
+
+11. Though they intend to harm you
+and devise a wicked plan, they will not prevail.
+
+12. Instead, you will put them to flight
+when you ready your bowstrings to shoot at them.
+
+13. Be exalted, Lord, in your strength;
+we will sing and praise your might.
+
+
+
+