Correctly initialize mSingleAccountMode

This fixes a NullPointerException when trying to open account settings
from the Unified Inbox (when there's only one account).
Update Greek translation
Update French translation
Update Brazilian Portuguese translation
Fix error in XML of French translation
Update greek strings (29 of May 2013)

After reinstalling K-9 on my new mobile, I observed some misinterpretations and I fixed them.

I hope this translation makes it in the stable version 4.400.

Enjoy
New translations and tweaks (PT-BR)

Missed strings and improvements.
Update Eclipse classpath file for Android SDK Rev. 22

http://stackoverflow.com/questions/16596969/libraries-do-not-get-added-to-apk-anymore-after-upgrade-to-adt-22

https://android-review.googlesource.com/#/c/57063/

https://android.googlesource.com/platform/sdk/+/fa89a37dc29bb60f27820d81674ff547793b0a1a%5E1..fa89a37dc29bb60f27820d81674ff547793b0a1a/
Simplify Eclipse setup.

Create .project files for all the Ecplipse projects
so they will all have project names and can
all be brought into Ecplipse together with a single
'File -> Import -> Android ->
Existing Android Code Into Workspace'.

(Not bothering to remove the .project exclusion from
all .gitignore files.  Once the .project files are
checked in, they will no longer be ignored.)

Modify the top .project file so that Eclipse knows
k9mail's dependence on it plugins, and thus will
build everything in the correct order.

With the latest Android SDK Rev. 22, the top .classpath file
needs modification or else K9 will not run (see parent commit 53fcdd1).
But the initial import of k9mail into Eclipse works more cleanly if the
.classpath file doesn't exist on import, in which case Eclipse creates it
automatically.  So rather than modify the .classpath file, remove it
from git and leave it untracked.

(For an existing Eclipse project, this commit will remove the file from
the working directory.  A corrected version can be restored with:
git checkout 53fcdd1 .classpath
git rm --cached .classpath)

Add .classpath to the top .gitignore, now that no
.classpath files are being tracked (with one exception,
see below).

Create a tests/.classpath so that Java can find the k9mail
project in order to build the k9mail-tests project.
Merge pull request #319 from zjw/eclipse_build_changes

Eclipse build changes
Revert "Fix for StrictMode error."

This reverts commit bbdec62e37210d6abf39cb32a8a6651483d88382.

Aside from being the incorrect solution for fixing the problem
described in pull request 211, the patch generates 'Dead code'
warnings inside the if(){} statements on lines 46 and 47.

The correct fix for the problem was already implemented in commit
5678786c97596703b1b466e7f474f391df617ec1.

Although the logcat in the pull request was generated after the fix,
line numbers in the log indicate that it was based on an outdated
version of MimeUtility.java from before the fix.
Add new multi-select checkboxes to message list

Use the checkboxes of AOSP's Email app.
Use the color chip area as click target for the multi-select checkboxes
Make the color chip area slightly smaller
Added explicit width and height for the new message list checkbox

Without this change Android 2.x does weird things.
Only enable debug logging when running a debuggable build

There have been some complaints from Android developers that get flooded
by K-9's log messages when debugging their own apps. Oops :)
Remove submenu from the account context menu

There seems to be a bug in Android that makes submenus inaccessible on
some devices, e.g. the Samsung Galaxy S2.
https://code.google.com/p/android/issues/detail?id=53239
Update catalan translation.
Escape apostrophe.
Don't use extended notifications when privacy mode is enabled