Merge pull request #1157 from tugelbend/master

bug fix #1135, "show more" is usable again
Security issue: Encoding of GUID in itemcache to avoid directory bypassing with a malificious formatted GUID.
Issue 1157: Unused javascript function is removed.
Merge pull request #1161 from annando/master

Security issue: Encoding of GUID in itemcache to avoid directory bypassing with a malificious formatted GUID.
Merge pull request #1165 from annando/1409-issue-1157

Issue 1157: Unused javascript function is removed.
removed divgrow library, code cleanup