svn: allow specifying alternative template file for mod_dav config.

files: prevent XSS in fake errors message on filenodes.

docs: added example how to make tmpfs changes permanent

dependencies: added redis library to enable usage of redis backend for beaker.

auth: don't expose full set of permissions into channelstream payload. This leads to resource discovery security vulnerability

audit-logs: expose tailoed audit logs in repository view

security: fix XSS in repo strip view.

auth: use cache_ttl from a plugin to also cache permissions. - this gives a 30% speed increase in operations like svn commit - generally uses the same mechanismy like auth cache to cache permissions for faster access to vcs commands

auth-rhodecode: don't fail on bcrypt if user password is set to None. Default to emptry string to not cause an exception.

files: protect against 500 errors on nodelist.