reservation 5.x-1.0-beta5

there is no beta4 because of wrong release handling.

2008-Dec-21 -- beta5
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bugfixing for paypal
added a start/end date for possible reservation time instead of date + days
fixed typos
fixed styling
fixed timespan for reservation check
added paypal support using lm_paypal
fixed default settings
fixed installer
fixed reservation open timespan
made reduced price optional
fixed language
Added config page