Rainlendar 2.8 Beta 100

# Changes:
- Some of the languages are now bundled with Rainlendar so no separate installation is required.
- Added week numbers to the week views in Shadow4 and Chromophore skins.
- Added url buttons for the schedule views.
- Changed the loop alarm sound to be defined as number of seconds instead looping forever.
- The today's item and header in the event list can be customized with "todayheader" and "todayitem".
- Getting and setting global variables didn't work from lua scripts. Fixed.
- "Try direct connection if proxy fails" didn't work in Google calendar if the "Suppress errors" was enabled. Fixed.
- Removing start or due date from an Outlook task didn't work. Fixed.
- It was still possible to define the start date after due date for the tasks if just one of them was enabled. Fixed.
- New events created from the month view's context menu had today's date instead the selected one. Fixed.
- Month view showed some all day events incorrectly. Fixed.
- Upgraded to wxWidgets 2.8.11.