Added expiration headers for resources.
Merge branch 'develop' into feature/expiration_headers

Conflicts:
	module/Vivo/config/module.config.php
Merge pull request #215 from kormik/feature/expiration_headers

Added expiration headers for resources.
VP-62 - Requested document is available as '$requestedDocument' in view
templates
Merge pull request #226 from dlu-gs/hotfix/requested-document

VP-62 - Requested document is available as '$requestedDocument' in view
VP-63 - Explorer Move: document path (basename) is preset in the form
Merge pull request #227 from dlu-gs/hotfix/move-path

VP-63 - Explorer Move: document path (basename) is preset in the form
Merge pull request #228 from miroslavhajek/feature/backend

Feature/backend
Merge branch 'feature/backend' into develop
Merge pull request #229 from miroslavhajek/develop

Develop
Update README.md

README update
VP-12 API Document::getDocumentContent(), removed method
Merge branch 'feature/backend' of github.com:vivoportal/v2 into feature/backend
Merge branch 'develop' into feature/backend