remove unused code and comments
Merge branch 'master' into reftidy

Conflicts:
	viewtropical.php
remove pointless line
html and css validation changes
image and caption styles in css
revert checkboard code back to PBOX
make caption background white
make right margin for plant picture 0 to align in page better
IE css fixes
display captions for plant images if they exist
remove some commented code from template.php
minor code cleanup of template.php
add some comments to template.php
remove height value for navbar in css, it mucked up display on mobiles
some comments in header.php
Merge branch 'master' into reftidy
attemt to work on ref for mobile, need current master branch for peace of mind