Support tools housekeeping:
* Renamed some build targets to doc-*
* Added build target doc-zim
* Made bin/install similar to bin/doctrine (with separate .php file that can be run in the debugger)
* Made bin/zf executable
* Added Sandbox files and directories to .gitignore (allows for local sandbox controller for testing)
Minor fixes, changes, and standardisation:

* ACL: we only need to retrieve roles and resources once

* init.php: set default timezone in i18n-bootstrap; cleaner paths

* application.ini: reorder some settings, clean up quotation marks

* tests: ...Closed_Scale_Five and QuestionnaireQuestion fixes; cleaner paths in bootstrap
schema.yml and data.yml clean-up and adaptations
Minor fixes and comments:
* CategoryController, Model_CategoryTest, QuestionnaireControllerTest: @todo's added, dependencies on database-specific values
* CategoryControllerTest made more independent from database-specific ids
* cases/Controller and Fixture database functions clean-up
* View: only load additional language for jquery.ui.datepicker if not 'en'
* form element MlTextDefaultLanguage: moved todo comment above relevant code
Re-generated model Base classes