project-import: Try to fill project name automatically in import project dialog
project-import: Open a directory with Anjuta

If the directory contains an anjuta project file, it opens the project.
Else it shows the import project dialog.
sourceview: connect settings notifications with g_signal_connect_object().

So that the signals get disconnected automatically when the Sourceview
gets finalized. This is needed due to the fact that the Sourceview is not the
only thing that owns a reference to the settings object.
starter: Fix a warning
anjuta: Make sure the starter widget is visible on startup

If Anjuta is closed with some files (not a project) open and the option
"Do not load files on startup" checked, when restarted the main window is empty.
It should normally display the stater widget but this widget is hidden.
Updated Serbian translation
Add new quick-open plugin.

The quick-open plugin lets you quickly open project files and switch to
already open files.

https://bugzilla.gnome.org/show_bug.cgi?id=691445
quick-open: disconnect watch on IANJUTA_PROJECT_MANAGER_CURRENT_PROJECT.
quick-open: focus search entry on show.

Also make the tree view non focusable.
quick-open: don't use anjuta_shell_get_interface() during deactivation.

It may cause plugins to get activated again.