~anjan/sxmo-alpineconf

changed the date to the date of the conference
title card for demos and center images
Use "Sxmo" rather than "SXMO"
added other hooks to hook slide, added content to SSH slide
added theming slide
added stub slides on virtual keyboard and calling and texting
fixed lisgd name
some fixes on the contact slide
added introductory slide for features and reordered the feature slides a bit, split SSH & Hooks into two slides
added introductory slide with screenshots
add contact slide
added slides on technologies
added two introductory slides
minor comment: {SSH and Hooks} just call it hooks and turn ssh into a separate slide?
initial commit
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