loklak does not start because of missing library

[Orbiter]

on loklak.org, loklak fails to start!

with 10993ac we can see now this error

loklak@host000:/tmp$ tail -1000 loklak_201606130751.log 
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/log4j/or/RendererMap
    at org.apache.log4j.Hierarchy.<init>(Hierarchy.java:97)
    at org.apache.log4j.LogManager.<clinit>(LogManager.java:82)
    at org.apache.log4j.Logger.getLogger(Logger.java:104)
    at org.elasticsearch.common.logging.log4j.Log4jESLoggerFactory.newInstance(Log4jESLoggerFactory.java:38)
    at org.elasticsearch.common.logging.ESLoggerFactory.newInstance(ESLoggerFactory.java:82)
    at org.elasticsearch.common.logging.ESLoggerFactory.getLogger(ESLoggerFactory.java:66)
    at org.elasticsearch.common.logging.Loggers.getLogger(Loggers.java:121)
    at org.elasticsearch.common.settings.Settings.<clinit>(Settings.java:63)
    at org.loklak.data.ElasticsearchClient.<init>(ElasticsearchClient.java:110)
    at org.loklak.data.DAO.init(DAO.java:203)
    at org.loklak.LoklakServer.main(LoklakServer.java:215)
Caused by: java.lang.ClassNotFoundException: org.apache.log4j.or.RendererMap
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 11 more

The cause is this pull request here:
498c5f5

We need either that library back again or another solution.

[rmader]

Please clear your installation directory and rebuild. That error should not occur then.
(i mean ant clean)

But indeed, there's still some logging going on there which for some reason does not yet go to the general log.

I get alot of these:
Jun 13, 2016 3:35:30 PM org.apache.http.client.protocol.ResponseProcessCookies processCookies WARNING: Invalid cookie header: "set-cookie: fm=0; Expires=Mon, 13 Jun 2016 13:35:20 GMT; Path=/; Domain=.twitter.com; Secure; HTTPOnly". Invalid 'expires' attribute: Mon, 13 Jun 2016 13:35:20 GMT Jun 13, 2016 3:35:31 PM org.apache.http.client.protocol.ResponseProcessCookies processCookies WARNING: Invalid cookie header: "set-cookie: fm=0; Expires=Mon, 13 Jun 2016 13:35:21 GMT; Path=/; Domain=.twitter.com; Secure; HTTPOnly". Invalid 'expires' attribute: Mon, 13 Jun 2016 13:35:21 GMT

I disabled the normal output because there's still some rough edges in the code not yet using the log system. Will try to get them in.

Edit: httpclient now also logs to loklak.log (#581)

[rmader]

By the way, the travis build system is now able to check if loklak starts up fine. So all new push requests are checked before they are merged.
So if the startup fails, the problem should usually be searched for on the user system.

[Orbiter]

ok, lets include the 'clean' in bin/upgrade.sh

[rmader]

done, #584