Bug 905775 - Firefox is failing silently in recent travis builds during `make test-agent-test` step

This turns off the desktop extensions for the tests, and enabled the touch
events in DEBUG mode, so that the tests can actually use touch events.
Bug 907629 - Notify STK application when Settings is about to get killed

It seems like doing it in the onunload callback is already too late, and
it makes the STK behaving wrongly.
Bug 907669 - Fix unit test of screen manager
Bug 907470 - Fix modal dialog select one style
Merge pull request #11679 from alivedise/bugzilla/904971/screen-manager-unit-test-fail

Bug 904971 - Fix unit test of screen manager, r=timdream
Merge pull request #11680 from alivedise/bugzilla/907470/modal-dialog-select-one-style

Bug 907470 - Fix modal dialog select one style, r=timdream
Merge pull request #11639 from julienw/fix-travis-2

Bug 905775 - Firefox is failing silently in recent travis builds during `make test-agent-test` step
r=ochameau
Merge pull request #11664 from lissyx/bug907629

Bug 907629 - Notify STK application when Settings is about to get killed, r=frsela
Bug 908092 - Fix regression caused by ./bin/marionette change in 612e786f22dc1deb31489facdd0ae633440109ba
Merge pull request #11686 from lightsofapollo/fix-integration

Bug 908092 - Fix regression caused by ./bin/marionette change in 612e786...
Bug 906316 - Don't download the xulrunner SDK each time we change a branch if their configuration are different r=yurenju

This also shows a message when the archive file seems to be corrupted, advising
to run "make really-clean". Also changed "make really-clean" to remove all
xulrunner related files.

We now uncompress the archive directly in a specific directory that should
change when we change the URL.

We use a dot file inside the xulrunner SDK directory to keep the URL used to
download that SDK.

This _will_ make all devs redownload XULRunner, sorry.
Bug 906544 - Renamed the the global Notification object to Notify r=julien
bug 905096 - Build script modularization