parity-version pr reopen (#7136)

* parity-version module split from util

removed unused util deps and features

trigger buildbot again

only kvdb links rocksdb

snappy linker issues

* rm snappy

* fixed old version imports

dapps/src/lib.rs

@@ -41,6 +41,7 @@ extern crate parity_dapps_glue as parity_dapps;
 extern crate parity_hash_fetch as hash_fetch;
 extern crate parity_ui;
 extern crate keccak_hash as hash;
+extern crate parity_version;
 
 #[macro_use]
 extern crate futures;