Updates changelog
Updates authors
Adds "on load" hooks to modules
Merge branch 'master' of https://github.com/lmsgit/lms
Revert "Adds "on load" hooks to modules"

This reverts commit 5c350acc35f333002c2d3e7dd107905038ea77ea.
Removes "on load" hook from welcome module
Adds global "on load" hook
Merge pull request #258 from maciejlew/master

Adds "on load" hooks to modules...