fixed crash if there is no location
renamed method
activate caching
reformatted code
finished implementation of web view for logs
cleaned strings, renamed methods
renamed classes
commented out unused member variables to save ram
removed unused class
some refectoring
added class diagram
updated diagram
display error code if message is empty
redirect to login if token is invalid
don't crash on null values
removed login model class
updated strings
store token in private sharedPreferences
login bugfix
disable workaround as we now store the token in sharedPreferences