Fixed the brush initialization.

The brushes are now initialized as solid colored, in order to fix drawing
problems.
Merge Brush-Bugfix
Added the initialization of the active mixer brush.
Merge upstream changes.
reset window title every time we change the state of a subwindow to show the correct title

When maximizing a subwindow it remembers the title the mainwindow had before and resets it after unmaximizing/closing.
As the title might have changed due to a project switch, we have to reset the title again as it would else show an incorrect/old title.
Merge pull request #11 from LMMS/master

from LMMS:master
Render between loop markers
Delay  Clear buffer on load, correct use of interpolation, reformat
Added Export between loop markers as a checkbox, to the Export Project dialog
Merge pull request #1479 from DanWin/title

reset window title every time we change the state of a subwindow to show...
Merge pull request #12 from LMMS/master

from master
Flanger correct interpolate calculation
Flanger reformat, convert spaces to tabs
Flanger change Filenames to CamelCase
change as of issue 1474
Merge pull request #1485 from curlymorphic/delay-1.1

Delay effect   Clear buffer on load, correct use of interpolation, reformat
updated as per 1474
Merge pull request #1487 from curlymorphic/flanger

Flanger correct calculation,
Merge pull request #13 from LMMS/master

From master
Merge branch 'stable-1.1'

Conflicts:
	plugins/delay/delaycontrols.cpp
	plugins/delay/delaycontrolsdialog.cpp
	plugins/delay/delayeffect.cpp