Configure database connections via properties file

[Daniel Zoller]

Currently all database connections are configured using JNDI; to unify the configuration the configuration should be moved to properties files too.

please take care of the following things:

• the old servlets are currently using the jndi datasources
• some views!! are currently using the jndi datasources

[Daniel Zoller]

pages which are currently using the data sources directly are:

• admin_spammertags.jsp
• admin_tag_suggest.jsp (aren't these two site obsolete? We aren't using spammer_tags any more!)
• admin_suggest.jsp
• and the events sites for hypertext 2008/09, ...

[Daniel Zoller]

all modules except the open social module are prepared for spring

[Daniel Zoller]

removed admin_suggest.jsp

[Daniel Zoller]

please have a look at the admin-statistics branch. I have started to migrate the statistic queries.

[Thomas Niebler]

@clemensbaier Please have a look at that. I need that finished until the end of next week. What is the current status, anyway?

[Daniel Zoller]

merged into default for testing