Relating events and wearables

Closes #32

See merge request stf/stf-566/saref4wear!31

Added the class Occurrence as a superclass of Event, since it is more generic, that takes place in some location.

Added that an occurrence is detected by some device.

Created the hierarchy of properties

Closes #34, #27, #23, #22, and #12

See merge request stf/stf-566/saref4wear!30

* Information and its hierarchy
* The hasDeviceInformation property
* The emittedTemperature property

Now the user of a wearable can be any feature of interest

Closes #18

See merge request stf/stf-566/saref4wear!29

Closes #18.

Implemented the changes that were not merged correctly

See merge request stf/stf-566/saref4wear!28

Implemented the changes that were not merged correctly and removing the Area concept that suddenly appeared again.

Added labels to concepts. Issue #6.

See merge request stf/stf-566/saref4wear!27

Removed event types. Issue #33.

See merge request stf/stf-566/saref4wear!26

# Conflicts:
#   ontology/saref4wear.ttl

Added hasBatteryLife datatype property. Issue #26.

See merge request stf/stf-566/saref4wear!25

Removed Child, StaffMember, and Parent subclasses of LivingOrganism concept. Issue #30.

See merge request stf/stf-566/saref4wear!24

Merged all requests and fixed directory structure.

See merge request stf/stf-566/saref4wear!23

In order for a Wearer to have a location it must be a Spatial Object

See merge request stf/stf-566/saref4wear!21

# Conflicts:
#   ontology/saref4wear.ttl

An event cannot have a sensor, it is something intangible.

See merge request stf/stf-566/saref4wear!22

The range of age cannot be represented only with an integer

See merge request stf/stf-566/saref4wear!20

Defined Wearable as a subclass of a geosp:Feature so it is a spatial feature

See merge request stf/stf-566/saref4wear!19

# Conflicts:
#   ontology/saref4wear.ttl

Fixed: "deep" -> "depth"

See merge request stf/stf-566/saref4wear!18

Updates in capacity

See merge request stf/stf-566/saref4wear!17

Changed the domain of sendsNotificationsTo to Wearable

See merge request stf/stf-566/saref4wear!16

Changed the Wearer to be a subclass of LivingOrganism

See merge request stf/stf-566/saref4wear!15

I also fixed the label.

Defined Wearable as a subclass of a geosp:Feature so it is a spatial feature with a location and so on.