add _() to Exception messages

[roganw]

_() missing in raise Exceptions("msg")

[xrmx]

I think that exceptions in the logs should really be the same for everyone so that we can easily grep them.

[roganw]

@xrmx Logging exception information are recommend to use logging.info/warning/error/...
When use raise Exception(), the exceptions will be raised to the end user's browser.

[xrmx]

Right, then it's fine by me

[mistercrunch]

LGTM except for the broken build

[coveralls]

Coverage increased (+0.02%) to 69.32% when pulling 51f6a81 on RoganW:update_exception_msg into 0cf0860 on apache:master.

[coveralls]

Coverage increased (+0.02%) to 69.32% when pulling 51f6a81 on RoganW:update_exception_msg into 0cf0860 on apache:master.

[coveralls]

Coverage increased (+0.02%) to 69.32% when pulling 51f6a81 on RoganW:update_exception_msg into 0cf0860 on apache:master.

[coveralls]

Coverage increased (+0.005%) to 69.32% when pulling 41e2563 on RoganW:update_exception_msg into 08b7e89 on apache:master.

[coveralls]

Coverage increased (+0.005%) to 69.32% when pulling 41e2563 on RoganW:update_exception_msg into 08b7e89 on apache:master.

[roganw]

@mistercrunch Done