migrated all urls.  All urls / domains / hosts come from settings now, except for .md docs
removing 'getting started' template and urls; no longer used--instead we point to the wiki from the homepage
Merge remote-tracking branch 'upstream/develop' into urls

Conflicts:
	kalite/templates/central/landing_page.html
shortening use of localsettings into function, applying to all options to allow easier debugging/config
fixing bug in using template value, replacing url from merge, initial version of localor to allow easier testing
Merge remote-tracking branch 'origin/localor' into urls

Conflicts:
	kalite/settings.py
showing proper error when user tries to register with an email already registered
don't hide activation error from user
fixed syntax bug
making SECURESYNC_PROTOCOL a settings, so debugging becomes easy
adding documentation for setting up testbeds
proper formatting, completed documentation for all 3 listed scenarios
Merge pull request #59 from bcipolli/localor

local_settings check for all settings
making changes based on feedback; changing function name to more pythonic name that also suggests the meaning better
simple uninstalling script added
comments incorporated
Merge branch 'master' of github.com:bcipolli/ka-lite
Added 0.1 change of run of 10 exercise attempts.
Merge branch 'master' of github.com:bcipolli/ka-lite
updated documentation.  made central_server_host refer to the actual HTTP_HOST, and only expose it through main/custom_context_processors.py.  Make back-end email run through local_or_ code