chore(build): minify theme template for ng constant (#9455)
chore(build): minify theme template for ng constant (#9455)

* Now minifies the theme css for the Angular constant.

As discussed:
- Now minifying the SCSS for the $MD_THEME_CSS constant. (new)
- Not minifying the SCSS, when exporting a release build for bower-material. (currently)

Fixes #9066.
DevVersion/material,daniel-nagy/material,david-gang/material,profoundry-us/material,ilovett/material,vertazzar/material,vertazzar/material,clshortfuse/material,gkalpak/material,Splaktar/material,ServiceManagementGroup/material,angular/material,DevVersion/material,gkalpak/material,ilovett/material,Frank3K/material,miguelcobain/material,DevVersion/material,Splaktar/material,gkalpak/material,profoundry-us/material,graingert/material,Frank3K/material,SamDLT/material,oostmeijer/material,daniel-nagy/material,Splaktar/material,SamDLT/material,graingert/material,imjoeco/material,Frank3K/material,marekmicek/material,crisbeto/material,hayloft/material,miguelcobain/material,graingert/material,david-gang/material,angular/material,hayloft/material,Splaktar/material,bluebirdtech/material,DevVersion/material,imjoeco/material,imjoeco/material,pwistbac/material,profoundry-us/material,vertazzar/material,daniel-nagy/material,vertazzar/material,clshortfuse/material,ilovett/material,bluebirdtech/material,bluebirdtech/material,oostmeijer/material,SamDLT/material,crisbeto/material,ServiceManagementGroup/material,oostmeijer/material,pwistbac/material,ilovett/material,david-gang/material,marekmicek/material,angular/material,oostmeijer/material,miguelcobain/material,pwistbac/material,hayloft/material,clshortfuse/material,pwistbac/material,clshortfuse/material,angular/material,hayloft/material,crisbeto/material,ServiceManagementGroup/material,bluebirdtech/material,graingert/material,david-gang/material,profoundry-us/material,daniel-nagy/material,marekmicek/material,SamDLT/material,crisbeto/material,ServiceManagementGroup/material,marekmicek/material,miguelcobain/material,Frank3K/material,gkalpak/material,imjoeco/material