bootstrap cdn uses maxcdn now

Signed-off-by: Chris “Kwpolska” Warrick <kwpolska@gmail.com>
add a setting to kill the annoying USE_CDN warning

Signed-off-by: Chris “Kwpolska” Warrick <kwpolska@gmail.com>
fix #1450 for story_index

Signed-off-by: Chris “Kwpolska” Warrick <kwpolska@gmail.com>
flake8
Add a list in config where to add functions that will be called at template rendering time to fill the context
Merge pull request #1451 from azazel75/blog

(closes #1451)

Signed-off-by: Chris “Kwpolska” Warrick <kwpolska@gmail.com>
fix #1452 -- introduce deploy presets.

Signed-off-by: Chris “Kwpolska” Warrick <kwpolska@gmail.com>
flake8

Signed-off-by: Chris “Kwpolska” Warrick <kwpolska@gmail.com>
actually accept multiple presets

Signed-off-by: Chris “Kwpolska” Warrick <kwpolska@gmail.com>
check if presets exist

Signed-off-by: Chris “Kwpolska” Warrick <kwpolska@gmail.com>
fix warnings for old-style commands

Signed-off-by: Chris “Kwpolska” Warrick <kwpolska@gmail.com>
Merge pull request #1453 from getnikola/deploy-presets

fix #1452 -- introduce deploy presets.
check if a file is a dir in a cross platform manner
update freezegun

Signed-off-by: Chris “Kwpolska” Warrick <kwpolska@gmail.com>
Merge pull request #1454 from phora/patch-1

Check if a file is a dir in a cross platform manner
did they really release a new freezegun AGAIN?
Today’s test requirements update: pytest

Signed-off-by: Chris “Kwpolska” Warrick <kwpolska@gmail.com>
Exit with code 3 when nikola fails before task is run.

Using exit code 3 similar to what do-it uses.  Fixes #1455.
Merge pull request #1457 from getnikola/return-code

Exit with code 3 when nikola fails before task is run.
freezegun update, take three.