Changes

[528993] Complete I18N of org.eclipse.eef.properties.ui plug-in
Add missing strings and fix the Messages class initialization.
Bug: 528993 Change-Id: I653a39ddf2b1d60d2ecabb89548b2b9da7eca101 
Cherry-Picks: 525990 Signed-off-by: Pierre-Charles David
<pierre-charles.david@obeo.fr>

[528330] Handle possible edition conflicts in the text widget
Some conflict situations could cause the loss of user input inside a 
text field.
If the user has started editing a text field when a concurrent refresh 
occurs and produces a different reference value that the one he started
from, detect the potential conflict and react accordingly. If the new
reference value is the same, keep the user input without interupting
him.
The reaction in case of conflict is configurable: the implementation in
EEFTextLifecycleManager uses a new preference 
TEXT_CONFLICT_RESOLUTION_MODE, which is not exposed in the UI but can be
configured programmatically using 
EEFPreferences.setTextConflictResolutionMode().
The default preference value can also be overridden by configuration, 
using the -pluginCustomization startup flag to point to a 
plugin_customization.ini file with, for example:
org.eclipse.eef.ide.ui/TEXT_CONFLICT_RESOLUTION_MODE=USE_LOCAL_VERSION
EEFTextLifecycleManager supports three modes:
* USE_MODEL_VERSION: overwrite the widget's content with the value
 computed from the new version of the model (no user feedback). This
 is the default.
* USE_LOCAL_VERSION: keep the current value begin edited by the
 end-user in the widget (no user feedback);
* ASK_USER: open a simple dialog box to ask the user which version to
 keep. Note that the simple dialog provided is only suitable for
 short (single-line) text fields.
Conflict resolution can further be customized by providing a custom 
LifecycleManager which extends the default EEFTextLifecycleManager and 
overrides either:
* askUserToResolveConflict() to take the preference in consideration,
 but implement ASK_USER differently, for example with a more
 sophisticated dialog.
* resolveEditionConflict() to provide a completely different
 strategy (possibly ignoring the preference).
Bug: 528330 Change-Id: I37125b40fcfaea3fd8dcfc59aa2dcb692dfe6919 
Cherry-Picks: 528134 Signed-off-by: Pierre-Charles David
<pierre-charles.david@obeo.fr>

[529128] Fix a selection issue with List during refresh
Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=529128 Change-Id:
I1b2cd5d7d55d62cd0dd2066b32a5ffc08eb2e4e0 Signed-off-by: Stéphane
Bégaudeau <stephane.begaudeau@obeo.fr>

[doc] Update the release notes for EEF 2.0.1
Change-Id: Ibe5648158010f88e21d661fc6ec139559facf7c0 Signed-off-by:
Stéphane Bégaudeau <stephane.begaudeau@obeo.fr>

[releng] Bump the version to 2.0.1
Change-Id: I21f38d90d2f441b60bc52cdfb31b7ab0209ab785 Signed-off-by:
Stéphane Bégaudeau <stephane.begaudeau@obeo.fr>