Added warnings about not grading assignments for external learners

Author: davewhipp

source/lessons/L1/exercise-1.rst

@@ -1,6 +1,11 @@
 Exercise 1
 ==========
 
+.. warning::
+
+    Please feel free to complete the assignment below.
+    However, note that **we provide assignment feedback only for students enrolled in the course at the University of Helsinki**.
+
 The exercise for this week should be pretty simple and comprises two parts.
 First, you need to go to GitHub.com and create an account.
 Second, you need to go through the process of using one of the cloud computers from start to finish.

source/lessons/L2/ex-2.rst

@@ -1,6 +1,11 @@
 Exercise 2
 ==========
 
+.. warning::
+
+    Please feel free to use the link below to create your personal copy of this assignment using GitHub Classroom.
+    However, note that **we provide assignment feedback only for students enrolled in the course at the University of Helsinki**.
+
 .. admonition:: Start your assignment
 
     **You can start working on your copy of Exercise 2 by** `accepting the GitHub Classroom assignment <https://classroom.github.com/a/AgzvDCtR>`__.

source/lessons/L3/ex-3.rst

@@ -1,6 +1,11 @@
 Exercise 3
 ==========
 
+.. warning::
+
+    Please feel free to use the link below to create your personal copy of this assignment using GitHub Classroom.
+    However, note that **we provide assignment feedback only for students enrolled in the course at the University of Helsinki**.
+
 .. admonition:: Start your assignment
 
     You can start working on your copy of Exercise 3 by `accepting the GitHub Classroom assignment <https://classroom.github.com/a/FhxIGxYP>`__.

source/lessons/L4/ex-4.rst

@@ -1,6 +1,11 @@
 Exercise 4
 ==========
 
+.. warning::
+
+    Please feel free to use the link below to create your personal copy of this assignment using GitHub Classroom.
+    However, note that **we provide assignment feedback only for students enrolled in the course at the University of Helsinki**.
+
 .. admonition:: Start your assignment
 
     You can start working on your copy of Exercise 4 by `accepting the GitHub Classroom assignment <https://classroom.github.com/a/BYsCRDRL>`__.

source/lessons/L5/ex-5.rst

@@ -1,6 +1,11 @@
 Exercise 5
 ==========
 
+.. warning::
+
+    Please feel free to use the link below to create your personal copy of this assignment using GitHub Classroom.
+    However, note that **we provide assignment feedback only for students enrolled in the course at the University of Helsinki**.
+
 .. admonition:: Start your assignment
 
     You can start working on your copy of Exercise 5 by `accepting the GitHub Classroom assignment <https://classroom.github.com/a/MXIJ5dnS>`__.

source/lessons/L6/ex-6.rst

@@ -1,6 +1,11 @@
 Exercise 6
 ==========
 
+.. warning::
+
+    Please feel free to use the link below to create your personal copy of this assignment using GitHub Classroom.
+    However, note that **we provide assignment feedback only for students enrolled in the course at the University of Helsinki**.
+
 .. admonition:: Start your assignment
 
     You can start working on your copy of Exercise 6 by `accepting the GitHub Classroom assignment <https://classroom.github.com/a/sGMRZyYa>`__.

source/lessons/L7/ex-7.rst

@@ -1,6 +1,11 @@
 Exercise 7
 ==========
 
+.. warning::
+
+    Please feel free to use the link below to create your personal copy of this assignment using GitHub Classroom.
+    However, note that **we provide assignment feedback only for students enrolled in the course at the University of Helsinki**.
+
 .. admonition:: Start your assignment
 
     You can start working on your copy of Exercise 7 by `accepting the GitHub Classroom assignment <https://classroom.github.com/a/C3OJUyOu>`__.