Merge pull request #1032 from cgar/spelling

few mispelling errors

docs/tutorial/dbcon.rst

@@ -53,7 +53,7 @@ every time the app context tears down.  So what does this mean?
 Essentially the app context is created before the request comes in and is
 destroyed (teared down) whenever the request finishes.  A teardown can
 happen because of two reasons: either everything went well (the error
-parameter will be `None`) or an exception happend in which case the error
+parameter will be `None`) or an exception happened in which case the error
 is passed to the teardown function.
 
 Curious about what these contexts mean?  Have a look at the

flask/_compat.py

@@ -77,7 +77,7 @@ def with_metaclass(meta, *bases):
 # breaks the __exit__ function in a very peculiar way.  This is currently
 # true for pypy 2.2.1 for instance.  The second level of exception blocks
 # is necessary because pypy seems to forget to check if an exception
-# happend until the next bytecode instruction?
+# happened until the next bytecode instruction?
 BROKEN_PYPY_CTXMGR_EXIT = False
 if hasattr(sys, 'pypy_version_info'):
     class _Mgr(object):

flask/helpers.py

@@ -662,7 +662,7 @@ def get_root_path(import_name):
                                'module came from an import hook that does '
                                'not provide file name information or because '
                                'it\'s a namespace package.  In this case '
-                               'the root path needs to be explictly '
+                               'the root path needs to be explicitly '
                                'provided.' % import_name)
 
     # filepath is import_name.py for a module, or __init__.py for a package.