[TASK] Remove TTL feature in Assets

Idea was ill conceived - and files are removed when cache is cleared.
Merge pull request #284 from NamelessCoder/nottl

[TASK] Remove TTL feature in Assets
[BUGFIX] Correct condition
[BUGFIX] Respect fluid argument for standalone assets
[TASK] Code cleanup
Merge pull request #289 from bjo3rnf/standalonefluid

[BUGFIX] Enable fluid parsing for standalone assets
[TASK] Make Form / HasValidator condition validatorName optional

If not specified, the ViewHelper will render the `then` child if the given property has ANY Validator whatsoever.
Merge pull request #291 from NamelessCoder/hasvalidator

[TASK] Make Form / HasValidator condition validatorName optional
[TASK] Trim dots off variables array before passing to Fluid
Merge pull request #292 from NamelessCoder/removedots

[TASK] Trim dots off variables array before passing to Fluid
[TER] 1.8.2