app manager: move details view into own activity

Change-Id: Ic1927bd29ce9573c58e20630289d7722e2038bee
app details: refactor layout

Change-Id: I39b1b016b04ca7cda020b2304d77a3f06cc36d63
preferences: improve readability, switch to normal and light font

Change-Id: Ida846aafeb04c74b4ee9b27391ef6822658a3ce1
reflect changes in MPAndroidChart

Change-Id: Id61b72f416b0c20a39cbf53e77372f3fba8a69e4