Create lookup.py
Added lookup button to config screen
Added PLOVER:LOOKUP command

Added PLOVER:LOOKUP command that opens the dictionary lookup screen
Added lookup frame coordinates
Added tests for lookup frame coordinates
Create util.py
Moved platform specific code into util file
Use lookup frame coordinates
Moved platform specific code into util file
Util.py is now just a module not a class
Use util module
Use util module
Merge pull request #182 from mighele/Dictionary-Lookup

Dictionary Lookup