LEDGE-253: server side identitity store idenpendent from HTTP session.
Revert "LEDGE-253: server side identitity store idenpendent from HTTP session."

This reverts commit 01bbc127e67ce73771419175a7a2bea81c7ced0a.
Revert "LEDGE-253: load json2.js for IE8 compatibility"

This reverts commit 97665d7a37c67d2d74ce108880861819a8a42958.
cyklotron-upgrader project.
CyklotronHelper.setConfig Improvment.
TomcatHelper.setRootXml fix.
give more time for cyklotron to worm up.
CYKLO-1000: Polls.js voting fix.
Disable vote click if option is not checked.
Disable vote click if answer is not selected.
CYKLO-1001: adjust page size for cached table state, whenever component
configuration changes.
use released version of jflex-maven-plugin
fixed jflex plugin artifactId
sonar plugin version update
LEDGE-256: Ledge filesystem root can be now set through JVM system
properties, without meddling with web.xml
CYKLO-1003: missing or invalid upload_bucket_id: log more information,
provide error message to the user
CYKLO-1004: cache the immutable org.egothor.stemmer.Trie object in order
to produce StempelStemmer instances effectively.
track session using cookies only ;jesessionid breaks too many things
LEDGE-255: Coral entities for storing rate limiting configuration
LEDGE-255: data storage