Adjusting glossary titles and term/definitions.
Removing padding from chapter titles
Fixing spacing after numbering of exercises in section exercises.
Merge pull request #381 from Connexions/precalculus-github-issues

Fixing spacing after numbering of exercises in section exercises.
fix for answer key meaning misalignment when 3 sentences present
Merge pull request #382 from Connexions/psychology-key-terms-fix

Fix for answer key meaning misalignment when 3 sentences present
Merge pull request #378 from Connexions/history-github-issues

Adjusting glossary titles and term/definitions.
Adjusting header colors in psychology, fixes #360.
Merge pull request #384 from Connexions/precalculus-github-issues

Adjusting header colors in psychology, fixes #360.
Merge branch 'master' into production