Better student user doc division

Rewritten-docs.md

@@ -1921,7 +1921,7 @@ sign. In the second column there is a list of assigned exercises with its
 deadlines. If you want to quickly get to the groups page you might want to use
 provided "Show group's detail" button.
 
-### Join Group and Start Solving Assignments
+### Join Group
 
 To be able to submit solutions you have to be a member of the right group. Each
 instance has its own group hierarchy, so you can choose only those within your
@@ -1946,6 +1946,8 @@ the list of fellow students. If the supervisors of the group allowed students to
 statistic of their fellow students then there will also be the number of
 points each of the students has gained so far.
 
+### Start Solving Assignments
+
 In the "Assignments" box on the group detail page there is a list of assigned
 exercises which students are supposed to solve. The assignments are displayed
 with their names and deadlines. There are possibly two deadlines, the first one
@@ -1976,6 +1978,8 @@ your browser which will be displayed in another dialog window. When the whole
 execution is finished then a "See the results" button will appear and you can
 look at the results of your solution.
 
+### View Results of Submission
+
 On the results detail page there are a lot of information. Apart from assignment
 description, which is not connected to your results, there is also the solution
 submitter name (supervisor can submit a solution on your behalf), further there