Added support for Ubuntu 20.04 and root usage (#1867)
Added support for Ubuntu 20.04 and root usage (#1867)

* Added support for Ubuntu 20.04 LTS (focal) and enabled root installation for npm and bower

* Removed Swap Files

* Fixed Flags in npm install command

* Added comment for --unsafe-perm flag purpose
google/clusterfuzz,google/clusterfuzz,google/clusterfuzz,google/clusterfuzz,google/clusterfuzz,google/clusterfuzz,google/clusterfuzz,google/clusterfuzz