OPAL-2249
Merge pull request #445 from kazoompa/bug-OPAL-2249

OPAL-2249 - trapped notification error in wizard step and disabled next button until the problem persisted
Add padding to url example
Fix Shiro Session to use EhCache
* OPAL-2281: Replace Shiro MemorySessionDAO as it fills memory
* OPAL-2280: Memory is filling up working with Views
Do not ensure profile on every session start if it was already done before
Increments maxElementsInMemory for default cache
Fix OPAL-2286: Add to ValueTable API the variable count and the value set count