PEP8 branch commits. Details:

PEP8 corrections:
o line lengths (not affecting readability);
o format strings;
o unused variables;
o unused imports (chimera.core.logs...);
o Scheduler modules untouched;
o typos! ("import SocketSever", "telescoope",...)
o some deprecations (Dict.has_keys(), class comparisons "is" repl. ==)
Unification of logging, added manager, location to logs.

This commit intends to fix a non uniform behavior of logging across modules, as well as
different implementation of logging. Some modules/files which intentionally implement
their own logging version have not been modified.
Moved chimeraguider to controllers; disabled expose commands to camera.
Restored import of chimera.core.log for files using setConsoleLevel.
cknowledged commit of chimeraguider to controllers!