Migrate various docs links to https (#2180)

Also fixed a few outdated links

docs/patterns/appfactories.rst

@@ -60,7 +60,7 @@ Factories & Extensions
 It's preferable to create your extensions and app factories so that the
 extension object does not initially get bound to the application.
 
-Using `Flask-SQLAlchemy <http://pythonhosted.org/Flask-SQLAlchemy/>`_,
+Using `Flask-SQLAlchemy <http://flask-sqlalchemy.pocoo.org/>`_,
 as an example, you should not do something along those lines::
 
     def create_app(config_filename):

docs/patterns/favicon.rst

@@ -49,5 +49,5 @@ web server's documentation.
 See also
 --------
 
-* The `Favicon <http://en.wikipedia.org/wiki/Favicon>`_ article on
+* The `Favicon <https://en.wikipedia.org/wiki/Favicon>`_ article on
   Wikipedia

docs/patterns/fileuploads.rst

@@ -181,4 +181,4 @@ applications dealing with uploads, there is also a Flask extension called
 blacklisting of extensions and more.
 
 .. _jQuery: https://jquery.com/
-.. _Flask-Uploads: http://pythonhosted.org/Flask-Uploads/
+.. _Flask-Uploads: https://pythonhosted.org/Flask-Uploads/

docs/patterns/sqlalchemy.rst

@@ -108,9 +108,9 @@ Querying is simple as well:
 >>> User.query.filter(User.name == 'admin').first()
 <User u'admin'>
 
-.. _SQLAlchemy: http://www.sqlalchemy.org/
+.. _SQLAlchemy: https://www.sqlalchemy.org/
 .. _declarative:
-   http://docs.sqlalchemy.org/en/latest/orm/extensions/declarative/
+   https://docs.sqlalchemy.org/en/latest/orm/extensions/declarative/
 
 Manual Object Relational Mapping
 --------------------------------
@@ -215,4 +215,4 @@ You can also pass strings of SQL statements to the
 (1, u'admin', u'admin@localhost')
 
 For more information about SQLAlchemy, head over to the
-`website <http://www.sqlalchemy.org/>`_.
+`website <https://www.sqlalchemy.org/>`_.

docs/patterns/sqlite3.rst

@@ -3,8 +3,8 @@
 Using SQLite 3 with Flask
 =========================
 
-In Flask you can easily implement the opening of database connections on 
-demand and closing them when the context dies (usually at the end of the 
+In Flask you can easily implement the opening of database connections on
+demand and closing them when the context dies (usually at the end of the
 request).
 
 Here is a simple example of how you can use SQLite 3 with Flask::
@@ -71,7 +71,7 @@ Now in each request handling function you can access `g.db` to get the
 current open database connection.  To simplify working with SQLite, a
 row factory function is useful.  It is executed for every result returned
 from the database to convert the result.  For instance, in order to get
-dictionaries instead of tuples, this could be inserted into the ``get_db`` 
+dictionaries instead of tuples, this could be inserted into the ``get_db``
 function we created above::
 
     def make_dicts(cursor, row):
@@ -102,15 +102,15 @@ This would use Row objects rather than dicts to return the results of queries. T
 
 Additionally, it is a good idea to provide a query function that combines
 getting the cursor, executing and fetching the results::
-    
+
     def query_db(query, args=(), one=False):
         cur = get_db().execute(query, args)
         rv = cur.fetchall()
         cur.close()
         return (rv[0] if rv else None) if one else rv
 
-This handy little function, in combination with a row factory, makes 
-working with the database much more pleasant than it is by just using the 
+This handy little function, in combination with a row factory, makes
+working with the database much more pleasant than it is by just using the
 raw cursor and connection objects.
 
 Here is how you can use it::
@@ -131,7 +131,7 @@ To pass variable parts to the SQL statement, use a question mark in the
 statement and pass in the arguments as a list.  Never directly add them to
 the SQL statement with string formatting because this makes it possible
 to attack the application using `SQL Injections
-<http://en.wikipedia.org/wiki/SQL_injection>`_.
+<https://en.wikipedia.org/wiki/SQL_injection>`_.
 
 Initial Schemas
 ---------------

docs/patterns/wtforms.rst

@@ -19,7 +19,7 @@ forms.
    fun.  You can get it from `PyPI
    <https://pypi.python.org/pypi/Flask-WTF>`_.
 
-.. _Flask-WTF: http://pythonhosted.org/Flask-WTF/
+.. _Flask-WTF: https://flask-wtf.readthedocs.io/en/stable/
 
 The Forms
 ---------