Merge pull request #1673 from pjackson28/master

Added missing i18n strings for GCWU intranet theme and fixed a couple of mistranslations
Fixed conflict residual content from i18n.csv
Merge pull request #1674 from pjackson28/master

Fixed i18n.csv file
Merge pull request #1675 from pjackson28/master

Added 'Custom link' to i18n.csv
Merge pull request #1676 from pjackson28/master

Capitalized Intranet in the GCWU Intranet theme i18n string
Merge pull request #1677 from pjackson28/master

Removed %show-image and %hide-image from i18n since no longer needed
Fixed SVG images not displaying in IE10 (#1679).