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

CSB/19_Psalms/Chapter_87.md

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+Psalm 87Zion, the City of God
+
+1. The city he founded is on the holy mountains.
+
+2. The Lord loves Zion's city gates
+more than all the dwellings of Jacob.
+
+3. Glorious things are said about you,
+city of God.Selah
+
+4. "I will make a record of those who know me:
+Rahab, Babylon, Philistia, Tyre, and Cush--
+each one was born there."
+
+5. And it will be said of Zion,
+"This one and that one were born in her."
+The Most High himself will establish her.
+
+6. When he registers the peoples,
+the Lord will record,
+"This one was born there."Selah
+
+7. Singers and dancers alike will say,
+"My whole source of joy is in you."
+
+
+
+