Support for localization.
en-US and fr supported
Add support for the sharing activity.
Incremented version number in manifest.webapp
Update script_share.js

replace else { if by else if
Revert to full path names in manifest.webapp. Version incremented.
Merge branch 'localization' into sharing

Conflicts:
	script_share.js
Localization of attributes (titles and placeholders)
Version number incremented to 0.5
Minor edit
Merge branch 'sharing' into localization