[FEATURE] Call ViewHelper

Calls method on an existing object, optionally with arguments.
[TASK] Allow "object" to be passed as inline argument, Call ViewHelper
[FEATURE] Added Media\Files ViewHelper
Merge pull request #12 from dreipunktnull/vh_media

[FEATURE] Added Media\Files ViewHelper
[FEATURE] Add Media\Extension ViewHelper
[TASK] Adjusted unit test for Media / Files ViewHelper to count actual files instead of hardcoded assumption
Merge pull request #13 from dreipunktnull/vh_media

[FEATURE] Add Media\Extension ViewHelper
[TER] 1.3.2
[FEATURE] Added Media\Size ViewHelper
[BUGFIX] Change indentation from spaces to tabs
Merge pull request #14 from dreipunktnull/vh_media

[FEATURE] Added Media\Size ViewHelper