Remove event handler for retired global channel filter shortcut
Re-implement UserEdit using Model/View paradigm to resolve various problems
with the old implementation.

- Added UserListModel.h/cpp as the backend for protobuf UserList editing
- Added UserListFilterProxyModel for filtering and sorting
- Re-implemented previous functionality in new environment
- This commit uses the new mumble coding style as found in http://mumble.sourceforge.net/New_code_guidelines
Fix application shortcuts not working in minimal mode.

Hiding elements of the UI like the icon toolbar disabled the
actions in it. As we want the shortcuts of the actions always
available we need to work around this behavior.

This patch adds all actions found in the object tree of the main-window
directly to the main window. As we don't use the auto-generated
context menu for that there shouldn't be any side-effects.

Another possible way would be to manually create QShortcuts and use
those instead. This would have much bigger code impact though.
Make userlist filter case-insensitive
Show channelid to ACLEditor
Update slice path for Ice 3.5.1
Merge pull request #180 from tgurr/ice-3.5.1

Update slice include path for Ice 3.5.1
mumble: fix UserListModel.h includes to work without PCH.
compiler.pri: use default OS X SDK instead of hard-coding it.

For Qt 5, we simply use 'macosx'. For Qt 4, we query via 'xcrun',
just like Qt 5 does under the covers.

This allows us to avoid changing the hard-coded OS X SDK every time
a new SDK is released. As long as Xcode is up-to-date, we'll build
with the new SDK automatically.
mumble: allow GlobalShortcut_macx.mm to build using the OS X 10.9 SDK.
mumble: use ConfigDialog_macx on Qt5/macx.
Fix mixup between printf and QString format character in VoiceRecorder error message
Fix overlay regression that in some cases prevented injection into devices in myCreateDevice(/Ex)

Incorrect checking for element existence in the std::map using the operator[]
caused interfaces to be added to the device map that weren't actually injected
to yet.

To minimize code impact before DX11 branch merge replace correct existence
checks triggering the bug with checks on whether there's a valid handle
(!= NULL) present for that device in the map. This way the default constructed
(and hence NULL) elements caused by the use of the operator[] are harmless.

For the future we'll have to decide whether we accept additional elements for
"simpler" coding or use the "logically cleaner" style of using find and
iterators.
Fix warning due to implicit BOOL to bool conversion.
Fix bug and formating in subrosa PA plugin.
Fix various compiler warnings with VS2010
Fix two GUI issues

- Fix layout mismatch between audio input and output config panels
- Fix right labels being matched with left aligned text in the
  certificate wizard. Now aligning label left and content left.
Update Turkish translation
Add x-scheme-handler support to the Mumble .desktop file.

This is the modern way to handle application-specific URL schemes
on the various desktop environments on Unix-like systems.

Fixes #1061 (reported by Chris Knadle; thanks!)

Originally fixed in Ubuntu via
https://bugs.launchpad.net/ubuntu/+source/mumble/+bug/934239
Updated Polish translation