When adding a new database when reloading the config at runtime the
architecture must be passed when creating the database. Otherwise we end up
with the new database sharing the internal storage with the x86_64 database
which leads to very confusing behavior.
* Break backwards compatibility
* Allow to deserialize only base-data of packages and build
actions to potentially speed up showing tables
* Speed up package search in many cases by only deserializing
base-data (unless details are actually wanted)
* Avoid keeping list of all packages in memory by pushing each package
directly to the JSON array
* Avoid check for database before pushing each package; do it only before
reaching the next database
* Remove no longer required functions
Martchus