core, frontends: refactoring to base Libervia on QuickFrontend (big mixed commit):

/!\ not finished, everything is still instable !
    - bridge: DBus bridge has been modified to allow blocking call to be called in the same way as asynchronous calls
    - bridge: calls with a callback and no errback are now possible, default errback log the error
    - constants: removed hack to manage presence without OrderedDict, as an OrderedDict like class has been implemented in Libervia
    - core: getLastResource has been removed and replaced by getMainResource (there is a global better management of resources)
    - various style improvments: use of constants when possible, fixed variable overlaps, import of module instead of direct class import
    - frontends: printInfo and printMessage methods in (Quick)Chat are more generic (use of extra instead of timestamp)
    - frontends: bridge creation and option parsing (command line arguments) are now specified by the frontend in QuickApp __init__
    - frontends: ProfileManager manage a more complete plug sequence (some stuff formerly manage in contact_list have moved to ProfileManager)
    - quick_frontend (quick_widgets): QuickWidgetsManager is now iterable (all widgets are then returned), or can return an iterator on a specific class (return all widgets of this class) with getWidgets
    - frontends: tools.jid can now be used in Pyjamas, with some care
    - frontends (XMLUI): profile is now managed
    - core (memory): big improvment on entities cache management (and specially resource management)
    - core (params/exceptions): added PermissionError
    - various fixes and improvments, check diff for more details

frontends/src/quick_frontend/quick_utils.py

@@ -17,7 +17,9 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+from sat.core.i18n import _
 from os.path import exists, splitext
+from optparse import OptionParser
 
 def getNewPath(path):
     """ Check if path exists, and find a non existant path if needed """
@@ -31,3 +33,19 @@ def getNewPath(path):
             return new_path
         idx+=1
 
+def check_options():
+    """Check command line options"""
+    usage = _("""
+    %prog [options]
+
+    %prog --help for options list
+    """)
+    parser = OptionParser(usage=usage) # TODO: use argparse
+
+    parser.add_option("-p", "--profile", help=_("Select the profile to use"))
+
+    (options, args) = parser.parse_args()
+    if options.profile:
+        options.profile = options.profile.decode('utf-8')
+    return options
+