[Qt] coin-control features GUI cleanup 2

- remove monospace labels from sendcoinsdialog also
- use a validated line edit for the change address
- add a tooltip to change address switch
- ensure we have a valid change address in
  CoinControlDialog::coinControl->destChange or just CNoDestination()
- some small ui file changes
[Qt] coin-control features GUI cleanup 3

- remove style sheets from ui files and use Qt attributes instead
- make some more strings untranslatable, to make life for translators
  easier
- split up long tooltips an rework the texts a little
bitcoin-cli: remove unneeded dependencies (only code movement)

Remove unnecessary dependencies for bitcoin-cli
(leveldb, berkelydb, wallet, RPC server)

Build system changes:
- split libbitcoin.a into libbitcoin_common.a, libbitcoin_server.a and
  libbitcoin_cli.a

Code changes (movement only):
- split up HelpMessage into HelpMessage in init.cpp and HelpMessageCli
  in rpcclient.cpp
- move uiInterface from init.cpp to util.cpp
Merge pull request #3320 from laanwj/2013_11_cli_split

bitcoin-cli: remove unneeded dependencies (only minor code movement)
Merge pull request #3285

d3207b6 [Qt] coin-control features GUI cleanup 3 (Philip Kaufmann)
834e14e [Qt] coin-control features GUI cleanup 2 (Philip Kaufmann)