Issue #2547691 by snehi, er.pushpinderrana, edxxu, ipun.amin, visabhishek, jhodgdon, cilefen, ttkaminski: Typo with #theme_wrappers

Issue #1719648 by joachim, ttkaminski, kshama_deshmukh: ModuleInstaller::install() silently fails if a module isn't in the file system