Volt fix clear when render
[Volt] Fix cache path save without /
Merge pull request #2465 from ovr/volt_fixes

[2.0.0] Volt fixes
Dump, redesign to static class
Dump, redesign to static class
File validator, post_max_size fix, allowEmpty fix
File validator, allowEmpty fix
Dump, redesign to static class
View, cacheMode typo fix
Session, libmemcached adapter, servers variable fix
Dispatcher, missing get previous fix
Dump, remove warning about static constructor