Finished refactoring for ZF3

• the application is now based completely on ZF3 - all the former components were removed
• the functionality should be 1:1 to the current productive version
• layout isn't ready so far

Update to the latest ZF2 components

This step is a preparation for the update to ZF version 3
https://github.com/swissbib/libadmin/releases/tag/R1.5alpha1 references the wrong branch

Update to the latest ZF2 components

This step is a preparation for the update to ZF version 3

improved sort for API

R1.1

Adds sorting direction

finally a deployable version after some time with various branches

• based on latest ZF2 version 2.4.*
• various bug fixes (see closed issue list of the repository)
• includes API for mapportal as well as a Formeta serialization for Metafacture processing