added file module as a stub
indent characters changed, ffs

Signed-off-by: Tinybou <tdc-bob@daribouca.net>
added coverage dir to ignore list
commented out buggy function from cherrypy
changed the handling of Exception
added file module
moved tests to tests/ subfolder
Merge branch 'beta' of https://github.com/TDC-bob/TDCSKI.git into beta