Some non-existing configuration variables are used

I've found a set of missing, but used, configuration variables after patch from #001021 has been applied.

Here they are:

• Perpage_SessionLogs (Core)
• Comm_Perpage_Tests (Core)
• Comm_Perpage_Tests_Short (Core)
• Comm_Perpage_Widgets (Dev. Kit)
• Comm_Perpage_Widgets_Short (Dev. Kit)
• Comm_Perpage_DetailTemplates (In-Auction)
• Comm_Perpage_DetailTemplates_Short (In-Auction)
• Comm_Perpage_Schedules (In-Auction)
• Comm_Perpage_Schedules_Short (In-Auction)

After a bit of research I deleted all the code, that used them, since it has a huge copy/paste error.