added /bin/bash to .sh files; should fix #15
other bash fixes
added whitespace to increase readability
Merge pull request #19 from mrshu/bash_everywhere

Fixing running shell scripts always in bash 
-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