Navigationflow for comments (as far as possible), removed ajax for login/logout -> additional navigations added (see description)

from register -> index on login
from linksubmit -> index on logout
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comment section doesn't seem to work for me?! navigation from linklist
to commentsubmit is restored, but there is no functionallity there..
Merge branch 'master' of https://github.com/MrHaribo/IntTe-Miniprojekt