Fixed bugs #75 #170 #174 #176 #187

Closes #75.
Closes #170.
Closes #174.
Closes #176.
Closes #187.

Couldn't fix #172 as it seems to be a "feature". I can't find why this happens and I also don't know if it is a problem? Can anyone find a solution? (I found the intent flag ``FLAG_ACTIVITY_TASK_ON_HOME``, but this doesn't seem to work for me)

Closes #172?