Added new logging library
Added new permissions to handle disabling other launchers and installing allowed apps
Refactored package utility added new methods in PrefsHelper to store disabled packages list
Added new application class to initialize global stuff i.e Logging
Added new utility classes
Added new activity to test certain features:
1. Test Mode activity to check whether we have necessary access rights to perform the task
2. Prompt user to set Rumie as default launcher at the start-up (in final build this will be done without user input)
minor doc changes
Changed Rumie app package name; it is now org.rumie.launcher