Fix missing documentation for many clock faces:

* Move from .c to .h as needed for consistency.
* When missing from both, copy from pull request or wiki.
* When missing entirely, infer functionality from source code.

movement/watch_faces/complication/habit_face.h

@@ -25,8 +25,6 @@
 #ifndef HABIT_FACE_H_
 #define HABIT_FACE_H_
 
-#include "movement.h"
-
 /*
  * Habit tracking face
  *
@@ -36,6 +34,8 @@
  *
  */
 
+#include "movement.h"
+
 void habit_face_setup(movement_settings_t *settings, uint8_t watch_face_index,
                       void **context_ptr);
 void habit_face_activate(movement_settings_t *settings, void *context);