Add branching/version information to development section
Merge pull request #516 from patricklodder/readme_branching

Add branching/version information to development section
Update build-unix.md
Merge pull request #521 from whitj00/1.7.2-dev

Update build-unix.md
change icons to version with 7 images
Fee warining at 5000 Bytes as it was in 1.6.
[Qt] Fix coin control qt5 checkbox bug in tree mode
minor style cleanups

Conflicts:

	src/main.cpp
Fix missing wallet lock in CWallet::SyncTransaction(..)
[Qt] Fill in label from address book also for URIs
Adjust branding in datadir lock error message
Conflicts:

	src/init.cpp
Add a "relayfee" field to getinfo.

This shows the minimum relay fee for non-free transactions in btc/kb.

The armory developers requested this so that they can prevent users from
 creating transactions that not even their local bitcoind will relay.

This also slightly reorders the getinfo output so that the fee related
 lines are grouped and changes the help text to reflect that the units
 are btc/kb.

Conflicts:

	src/rpcmisc.cpp
Replaced references to "btc" with "doge".
qt: Show also value for options overridden on command line

Currently only the name of the option is shown for GUI options
overridden by command line (or configuration file). This commit
adds the value of the options as well, which is useful for
troubleshooting.
[Qt] Dont set table color in coin control
Updated client version 1.7.2 and marked it as non-release.
qt: change CT_NOW string to CT_NEW in log message

Closes #3852.

Rebased-By: Wladimir J. van der Laan <laanwj@gmail.com>
Rebased-From: 5f2907a, 88d3df4
Add licenses for tests and test data

- Add license headers to source files (years based on commit dates)
  in `src/test` as well as `qa`
- Add `README.md` to `src/test/data` specifying MIT license

Fixes #3848
Fixed compile error on Debian jessie (gcc version 4.8.2 (Debian 4.8.2-16))
Updated version in main README.