[Refactor] Rename the app module to calsocial

Just for clarity

.gitignore

@@ -1,4 +1,4 @@
 __pycache__/
-/app/local.db
+/calsocial/local.db
 /messages.pot
 /app/translations/*/LC_MESSAGES/*.mo

calsocial/__init__.py

@@ -46,8 +46,8 @@ def template_vars():
 
 class CalendarSocialApp(Flask):
     def __init__(self, name, config=None):
-        from app.models import db, User, Role
-        from app.security import security
+        from .models import db, User, Role
+        from .security import security
 
         Flask.__init__(self, name)
 
@@ -70,7 +70,7 @@ app = CalendarSocialApp(__name__)
 
 @app.route('/')
 def hello():
-    from app.calendar_system.gregorian import GregorianCalendar
+    from .calendar_system.gregorian import GregorianCalendar
 
     if not current_user.is_authenticated:
         return render_template('welcome.html')
@@ -85,8 +85,8 @@ def register():
     if not current_app.config['REGISTRATION_ENABLED']:
         return render_template('registration-disabled.html')
 
-    from app.forms import RegistrationForm
-    from app.models import db, User
+    from .forms import RegistrationForm
+    from .models import db, User
 
     form = RegistrationForm()
 
@@ -106,8 +106,8 @@ def register():
 @app.route('/new-event', methods=['GET', 'POST'])
 @login_required
 def new_event():
-    from app.forms import EventForm
-    from app.models import db, Event
+    from .forms import EventForm
+    from .models import db, Event
 
     form = EventForm()
 

calsocial/calendar_system/gregorian.py

@@ -48,7 +48,7 @@ class GregorianCalendar(CalendarSystem):
         return day_list
 
     def day_events(self, date, user=None):
-        from app.models import Event
+        from ..models import Event
 
         events = Event.query