Added more property help docs

app/private/docs/property/class-level.md

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+# Class level
+
+A class level is a property that represents a single level in a class. It is generally used as a child of a [Class property](/docs/property/class).
+
+Features and bonuses that are given by a class level get added as children of the class level.
+
+---
+
+### Level
+
+Which level this property represents.
+
+### Name
+
+The name of the class or subclass this level is part of
+
+### Variable name
+
+The same variable name of the class this level belongs to.
+
+### Description
+
+A description of the benefits gained with this level.
+
+Allows [inline calculations](/docs/inline-calculations).
+
+### Tags
+
+See [Tags](/docs/tags)