This reverts commit 1358c13c

disabled warning when using connect() with an established connection, because of unnecessary confusion

See issue #54 for more info

... and not all devices. For this functionality, the EV3-method
resetAllDeviceValues has been added.

... that leads to bazillion error messages when there is an unexpected
connection error.

The EV3-object now handles the connection and sends commands via the
commInterface. This eliminates A LOT of redundant code (as Motor and
Sensor now only need a handle to the EV3-object, not connect/disconnect
functionality any more) and facilitates error handling.

Adapted (and cleaned up) error messages and warnings accordingly.

The parsing is done by the process.py script.

... and do a little clean-up.

Caused some errors when displaying the devices.

In contrast to most other handle-methods, this cannot be done in
MaskedHandle as Motor uses findprop.

Implements overriden display-function and adapts comments to MATLAB's
doc and help function in order to deliver a cleaner interface.
Also, for some reason, all file-access modes in /source are marked as
changed.

Renamed tachoLimit back to limitValue, fixed comments and minor bugs, and
made commInterface private.

Also, delete syncMotor-remains

Also, lots of code cleanup, comments, etc.

On deletion/disconnect, communication-objects of lower layers are now
properly deleted and disconnected.

If debug=2, the lower-layers are now properly set to debug mode.

For a bit more detailed description, see issue #3. I implemented a
more sophisticated error handling in the comm-Layer which handles
communication errors as close to their source as possible.
The error handling scheme I used will be implemented in upper layers
as well.

Upon receiving a faulty packet, the request-reply-packet is send again up
to 5 times. A faulty packet is recognized by looking at the 5th byte
which has to be '2' or '4'. This solution is not safe at all, but seems
to work for now.

Adds the beta-version of the toolbox along with examples, a How-To and
convenient documents.