Tweaks in Hippo

[dilawar]

• [x] Fix google calendar link.
• [x] Generate pdf of all events, currently only last one is being generated.
• [x] Different email for helpdesk queue.
• [x] Don't show admin any button unless request is selected.
• [x] APPROVEED -> APPROVED
• [x] Change background of public events in the allevents.php page.

[dilawar]

d8cf11734bdb23aaba6192b5a2d4941428216b87 turns background color of public events to red.