removing deprecated keywords + reorder imports
fix/cleanup of a xseed test case + reordering of all imports according
to PEP8


takes also care about "reimporting warnings" while importing
obspy.xseed.utils - 'utils' is already defined by the future module
duplicate
fixing an incorrect test
improving coverage
adding landscape property file
Remove list() calls from for loops.

It's unnecessary to create a list out of an iterable, if you are in fact
only going to iterate through it!
Remove list() calls in container membership tests.

Container membership tests understand iterables.
Remove list() calls in map() calls.

map() can handle iterables.
Remove some more list()s where they aren't needed.

Either used as iterables, or in places they'd be iterated through
anyway.
obspy.neries: deprecate discontinued services (see #806)