Remove warn log in quota function on API layer

An API layer function in quotas print warn message when in input
is not valid, it's useless since an exception will be raised.

Change-Id: I707416aae29e56ad1c7d2cc55ca8c662bf5547f5
Improved logs for add/remove security group rules.

Added more details - protocol and port information to AUDIT log
messages on add/remove rule actions for security groups.

Change-Id: Ib446a63976dade90c51c13f30367a3ee17a739ea
Closes-Bug: #1154303
Spice proxy config setting to be read from the spice group in nova.conf

All spice configuration should be read from the spice group
in the nova config. As it's currently being done in the nova.spice
module.
Renaming spicehtml5proxy_{host, port} parameters to
html5proxy_{host, port}

DocImpact
Change-Id: I36c014c8b8a0796cda494f9450a1fc30104504a1
Closes-Bug: #1308418
Merge "Remove warn log in quota function on API layer"
Merge "Spice proxy config setting to be read from the spice group in nova.conf"
Fixed many typos.

These were found using: https://github.com/intgr/topy

Change-Id: Ia4e14508c285d95ab4eaeabbde032ecc5e7c9e4b
Imported Translations from Transifex

Change-Id: I7ee83b391ff267feb43e16748b855df788d4908a
Hacking: add rule number to HACKING.rst

Commit ac8bce63f8a7ec8a2ebb214ea7f86ee4f8adecae added hacking rules
N319. This was not documented in the file HACKING.rst.

Change-Id: Ibf7917aaada88db5afe1387859a387481ec05118
Closes-bug: #1313322
Merge "Fixed many typos."
Merge "Improved logs for add/remove security group rules."