Merge pull request #15 from anssiko/gh-pages

Suggested changes to Introduction, Abstract, Status of the Document, and DeviceCapabilities interface section
Small fixings in IDL interface definitions

o Remove SystemDisplay as an instance of EventTarget
o Add 'readonly' to event handler

BUG=https://github.com/sysapps/device-capabilities/issues/16
Merge pull request #17 from hmin/fix

Small fixings in IDL interface definitions
Revert "Small fixings in IDL interface definitions"

This reverts commit 462ec1a871e5c9c357fbb13d0e47225f21bec17c.
Remove EventTarget for SystemDisplay
Merge pull request #18 from hmin/revert

Revert 'readonly' change
rework the Device Capabilities Properties section style (now Capability Data Interfaces) to use RFC terminology; use noLegacyStyle to remove redundant sections generated by the ReSpec tool