Refactor writing and deleting cache

Should be safe from race conditions an exception now
Save timestamp when removing component cache entry

Simplifies Api
Make Kwf_Component_Cache_Mysql_Test runnable when no memcache is installed
Use string as microtime

To support 32bit systems because integer of timestamp+milliseconds is too large
Get microseconds correctly also when start with 0
Do not track when kwcPreview is enabled
added possibilty to copy columnsResponsive

fixed it in Row duplicate, because its an fnfRow it has to return its own row not a new one
fix update script for vkwf webs
Return timestamp, not masked timestamp
Merge pull request #119 from fraxachun/3.4-viewcache-delete

Refactor writing and deleting cache

Should be safe from race conditions and exceptions now
Merge remote branch 'github/3.4' into 3.4
Same Size for ListItem in ColumnsResponsive when fullwidthImage is inside
Revert "Same Size for ListItem in ColumnsResponsive when fullwidthImage is inside"

This reverts commit 589071b9947755866ade6fc9abbe3050b2638744.
Negative margin on ColumnsResponsive to compensate the listItem Space
when passing invalid parameters output 404 code

fixes 'issues' found by AppScan
don't access HTTP_HOST on cli
fix apc calls with alternative url

method gets reset after request
support parsing of relative feed entry links
update update action to convert also parent_subroot_id correctly
copy master template related settings for Trl and Cc