[2/2] OmniGears: Power Menu: Add Screenshot Option

Adding Settings part in "Bars and Menus"

base: https://gerrit.omnirom.org/#/c/2704/

Change-Id: I54d46535758c2a7735668f1d2fd40d7a63beb801

Correcting Code formatting errors

Change-Id: I54d46535758c2a7735668f1d2fd40d7a63beb801