pgAdmin 4 commit: Add support for detachable tabs to the runtime.

Add support for detachable tabs to the runtime.

This allows the Query Tool, Debugger and web browser tabs to be moved to different monitors as desired.

Fixes #1344

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=0056a94115416c12690f58af3b77b9ce7c02da95
Author: Neel Patel <neel(dot)patel(at)enterprisedb(dot)com>

Modified Files
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runtime/BrowserWindow.cpp | 337 +++++++++++++---------------
runtime/BrowserWindow.h | 15 +-
runtime/TabWindow.cpp | 542 +++++++++++++++++++++++++++++++++++++++++++---
runtime/TabWindow.h | 151 ++++++++++++-
runtime/WebViewWindow.cpp | 82 +++++++
runtime/WebViewWindow.h | 17 +-
runtime/back.png | Bin 448 -> 290 bytes
runtime/close.png | Bin 587 -> 346 bytes
runtime/forward.png | Bin 445 -> 270 bytes
runtime/pgAdmin4.cpp | 15 +-
runtime/pgAdmin4.qrc | 1 +
runtime/qss/pgadmin4.qss | 3 +
12 files changed, 937 insertions(+), 226 deletions(-)