Fixes on build script for ubuntu.

 - moved back install location to standard /usr/share/openbazaar
 - fixed a lot of lintian errors related to permissions, copyright, changelog files.
 - made build script pep8 compliant

 Some lintian errors still showing are related to the binaries copied

```
E: openbazaar: arch-dependent-file-in-usr-share usr/share/openbazaar/pysqlcipher/build/lib.linux-x86_64-2.7/pysqlcipher/_sqlite.so
E: openbazaar: unstripped-binary-or-object usr/share/openbazaar/pysqlcipher/build/lib.linux-x86_64-2.7/pysqlcipher/_sqlite.so
E: openbazaar: embedded-library usr/share/openbazaar/pysqlcipher/build/lib.linux-x86_64-2.7/pysqlcipher/_sqlite.so: sqlite
E: openbazaar: arch-dependent-file-in-usr-share usr/share/openbazaar/pysqlcipher/build/temp.linux-x86_64-2.7/amalgamation/sqlite3.o
E: openbazaar: embedded-library usr/share/openbazaar/pysqlcipher/build/temp.linux-x86_64-2.7/amalgamation/sqlite3.o: sqlite
E: openbazaar: arch-dependent-file-in-usr-share usr/share/openbazaar/pysqlcipher/build/temp.linux-x86_64-2.7/src/cache.o
E: openbazaar: arch-dependent-file-in-usr-share usr/share/openbazaar/pysqlcipher/build/temp.linux-x86_64-2.7/src/connection.o
E: openbazaar: arch-dependent-file-in-usr-share usr/share/openbazaar/pysqlcipher/build/temp.linux-x86_64-2.7/src/cursor.o
E: openbazaar: arch-dependent-file-in-usr-share usr/share/openbazaar/pysqlcipher/build/temp.linux-x86_64-2.7/src/microprotocols.o
E: openbazaar: arch-dependent-file-in-usr-share usr/share/openbazaar/pysqlcipher/build/temp.linux-x86_64-2.7/src/module.o
E: openbazaar: arch-dependent-file-in-usr-share usr/share/openbazaar/pysqlcipher/build/temp.linux-x86_64-2.7/src/prepare_protocol.o
E: openbazaar: arch-dependent-file-in-usr-share usr/share/openbazaar/pysqlcipher/build/temp.linux-x86_64-2.7/src/row.o
E: openbazaar: arch-dependent-file-in-usr-share usr/share/openbazaar/pysqlcipher/build/temp.linux-x86_64-2.7/src/statement.o
E: openbazaar: arch-dependent-file-in-usr-share usr/share/openbazaar/pysqlcipher/build/temp.linux-x86_64-2.7/src/util.o
E: openbazaar: missing-dependency-on-libc needed by usr/share/openbazaar/pysqlcipher/build/lib.linux-x86_64-2.7/pysqlcipher/_sqlite.so
```

I'll probably need your help fixing these @josephbisch