-Check if database exists.
-Check if the user is installing as root.
-Check write permissions.
Merge branch 'develop' of github.com:ruimalheiro/ka-lite into develop

Conflicts:
	start.sh
bash related updates to runatboot.sh and donotrunatboot.sh
Merge pull request #21 from mrshu/runatboot

Bash related updates to runatboot.sh and donotrunatboot.sh
Scratchpad now aligns correctly.
Tweaks to wording in glossary.
IE Fix
Merge pull request #23 from ruimalheiro/develop

Added doctype to fix problems in IE.
Fix to main models to allow full points on video watching.
Merge branch 'develop' of github.com:jamalex/ka-lite into develop
Checks if the video exists. (A better solution, typo fix)
Video check (update)
Merge pull request #26 from ruimalheiro/develop

Display a message on the video page if that video file doesn't exist.
Merge branch 'i18n' into develop

# Please enter a commit message to explain why this merge is necessary,
# especially if it merges an updated upstream into a topic branch.
#
# Lines starting with '#' will be ignored, and an empty message aborts
# the commit.

Merging to allow Bill to pull and test, and to prevent bigger merge conflicts as more code changes.
Merge branch 'develop' of github.com:jamalex/ka-lite into develop

Conflicts:
	kalite/main/views.py

Merged i18n conflicts (bonus: found some strings we missed!)
Moved locale directory out into content/
Bug fix: File downloads now work after a previously cancelled download.
No page refresh required.
Merge branch 'develop' of github.com:jamalex/ka-lite into develop
Only displays description if it actually exists!
(update)