Further small edits, fixes and additions.

.../notificationFramework/notification/GoalNotification.java

...ficationFramework/notification/SedentaryNotification.java

...otificationFramework/sedentary/frontEnd/MainActivity.java

...java/com/notificationFramework/stimulus/BootLauncher.java

...java/com/notificationFramework/stimulus/GoalStimulus.java

...com/notificationFramework/stimulus/SedentaryStimulus.java

...notificationFramework/stimulusStrategy/Accelerometer.java

...m/notificationFramework/stimulusStrategy/StepCounter.java

src/main/res/values/strings.xml