Removed redundant import Data.Map
Used `const` for a constant function
Revert "Used `const` for a constant function".

This was discussed in the github comments for this commit.

This reverts commit 4ffe110bd1feca26f2f38ad7f2c301e631aaf808.
changed import in example to clarify source of libraries
Merge branch 'master' of https://www.github.com/frankfurt-haskell-user-group/HWebUI

Conflicts:
	examples/example-counter.hs