Project modernization for Xcode 4.2 and OSX Lion

Performed code modernization
Solved some of the deprecated warnings (those on NSSavePanel)
Tweaked the main.xib of MacFUSION.app in order to better manage the column widths, so that the mount/edit buttons are no more partially hidden on launch
Solved deprecated use of launchedApplications

Edited code in MFSettingsController#setup and mfcKaboomMacfusion() to replace launchedApplications with runningApplications, which returns an NSArray of  NSRunningApplication instead of an NSArray of Dictionaries
Corrected typo (missing "!" on mfcKaboomMacfusion()
Workaround for filesystem delete bug
remove insecure ssh options

The current code runs ssh with CheckHostIP=no and StrictHostKeyChecking=no
on the command line. These are security-sensitive options which an
application should not change without the user's knowledge. Setting
hostkey checking this way is particularly bad, since in this mode
Macfusion will silently connect to a spoofed server a user has
specifically verified in the past (ssh issues a warning, but Macfusion
ignores it and does not present it to the user).

I have removed the options; a user can add them in ~/.ssh/config or in the
Macfusion "SSH Advanced" tab if he actually wants them.
Merge https://github.com/pseudometric/macfusion2

Merging all pull requests as of 3/6/13
Arbitrary hacking to make MacFusion more stable.
I'm more seasoned at iOS dev than Mac development and even there I'm a rookie.
I'm not exactly sure why I managed to create a build that works correctly on 10.8
but I'll take it.

I have left in some NSLogs for the sake of easy debugging when things go bad.
The problem with the prepackaged binary on the main MacFusion page appeares
to be that the NSAlert callback for deleting an item from the server list
passes a reference that has been garbage collected already. Specifically,
the context being passed to the callback is the NSArray of servers in the list.

Compiling with 10.7's BaseSDK seems to have fixed things. I have no idea why.
Grabbed changes from  maxcabral / macfusion2 that I
quickly understood and thought beneficial
merge code that looked good from  ifraimow / macfusion2
removed a spurious release, since we are still in GC ;)
Do not output the password in DebugMode unless 
specifically told so with NSDebugEnabled. Too much
of a problem, when it stays there in logs.