Add "Volunteer Now" button to info pages of events which have associated projects.
Moved button-injection code from hook_civicrm_alterContent to hook_civicrm_pageRun.
Specify order of buttons and add CSS to page.
Added basic styles.
Merge pull request #67 from fjg-conflux/vol_now_button2

Add "Volunteer Now" button to info pages of events which have associated projects.