Database connection

Added the building brick for later on when we'll need to get exercises
from the external API
Added breakpoint function

Added the breakpoint function which will see if there is an unexpected
change of movement (a.k.a. breakpoint). Still only the start need to
work it out and test it
Added variables

Added some basic variables for the excercises
Created an update interval

Added an update interval which will check if a breakpoint has happend