gh-131 : Updated seam idenity manager to fire events each time a
principal enters or leaves the system. These events are observed by
application scoped seam object that registers the events on the
database.
gh-131 : initial working version
gh-131 : initial working version with reporting.
gh-131 : added report for employees to see their work attedances.
gh-131 : added few UI modifications.
gh-131 : don't allow personal work attendance to expands more than 30
days.
Merge pull request #132 from slavikos/gh-131

please merge my work regaring gh-131