Merge pull request #6 from lewenhagen/master

small fixes
Merge pull request #7 from lewenhagen/master

fixed E question
Merge pull request #8 from lewenhagen/master

mini fix
Merge pull request #9 from lewenhagen/master

another mini fix
did not validate, fixed
Merge pull request #10 from lewenhagen/master

started on lab 1 fix
validation errors corrected
adding utf-9 as encoding
Merge pull request #11 from lewenhagen/master

section 1 done
Merge pull request #12 from lewenhagen/master

lab1 done
Merge pull request #13 from lewenhagen/master

lab1 done again
correcting validation errors in html
Merge pull request #14 from lewenhagen/master

lab 2 done
Merge remote-tracking branch 'upstream/master'
lab 3 done, and small fix in lab 2