Move status bar creation to mainwin.ui

Among other things,
* fix turtle icons size (20x14 -> 16x16)
* use QIcon states instead of changing the turtle icon ourselves each
  time (unchecked - off, checked - on)
* make speed limit action in tray menu checkable
* simplify status bar buttons drawing and use QToolButton instead of
  QPushButton


git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@14389 f4695dd4-2c0a-0410-b89c-da849a56a58e
Improve cross-compilation support when using CMake


git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@14390 f4695dd4-2c0a-0410-b89c-da849a56a58e
Rework statistics dialog in Qt client to load from .ui

Fix "Started %n time(s)" phrase (remove space in "time (s)", add proper
English translation for numeric forms).


git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@14391 f4695dd4-2c0a-0410-b89c-da849a56a58e
Move filter text clearing button into line edit. Use Qt-provided button on Qt 5.2+.


git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@14392 f4695dd4-2c0a-0410-b89c-da849a56a58e
Rework session dialog in Qt client to load from .ui


git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@14393 f4695dd4-2c0a-0410-b89c-da849a56a58e
Fix license wording in Qt client .cc files to match the rest of the code.


git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@14394 f4695dd4-2c0a-0410-b89c-da849a56a58e
#5543: Add a warning panel with id of duplicate torrent (patch by rb07 + personal touch)


git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@14395 f4695dd4-2c0a-0410-b89c-da849a56a58e
#4050: Use TRANSLATIONS_DIR macro as a hint for Qt client translation files location


git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@14396 f4695dd4-2c0a-0410-b89c-da849a56a58e
Move numeric units to the right of values (per KDE HIG)

Sync translations with the code. Adjust translations for changed phrases
(hopefully correct for the most of them).

One phrase still left untouched (Preferences -> Downloading), need to
think on better wording.


git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@14397 f4695dd4-2c0a-0410-b89c-da849a56a58e