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some small fixes in php client
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Merge branch 'master' of https://github.com/Wolframe/Wolframe
fix bugs in javascript and php client
added pbkdf2 module for php version < 5.5. work on authentication in progress
local RHEL5 build, don't check certificate of Python download
some documentation in the PhP client and move some unused (till now) code to .Attic
Merge branch 'master' of https://github.com/Wolframe/Wolframe
add default timeout variable to exec context