Updated SlimCenter to support SlimSaber OTA and also improved version check routine

Change-Id: Iecd2025c7524c9f0ceda22ef546b6c645a5ac543
Merge branch 'kk4.4' of https://github.com/SlimRoms/packages_apps_SlimCenter into kk4.4
Merge branch 'kk4.4' of https://github.com/SlimRoms/packages_apps_SlimCenter into kk4.4
Merge branch 'kk4.4' of https://github.com/SlimRoms/packages_apps_SlimCenter into kk4.4
Merge branch 'kk4.4' of https://github.com/SlimRoms/packages_apps_SlimCenter into kk4.4
Merge branch 'kk4.4' of https://github.com/SlimRoms/packages_apps_SlimCenter into kk4.4
Merge branch 'kk4.4' of https://github.com/SlimRoms/packages_apps_SlimCenter into kk4.4
Merge branch 'kk4.4' of https://github.com/SlimRoms/packages_apps_SlimCenter into kk4.4
Merge branch 'kk4.4' of https://github.com/SlimRoms/packages_apps_SlimCenter into kk4.4
Merge branch 'kk4.4' of https://github.com/SlimRoms/packages_apps_SlimCenter into kk4.4
Merge branch 'kk4.4' of https://github.com/SlimRoms/packages_apps_SlimCenter into kk4.4
Merge branch 'kk4.4' of https://github.com/SlimRoms/packages_apps_SlimCenter into kk4.4
Change OTA file to Wuala file hosting

Change-Id: I2cb39993917a19044bf7533aee11ee8f1239d3a3
Merge branch 'kk4.4' of https://github.com/SlimRoms/packages_apps_SlimCenter into kk4.4
Change download URL to androidfilehosting.com

Change-Id: I72079fc9025ecabfb1fded8d9f2feb8e36bb9d83
Merge branch 'kk4.4' of https://github.com/SlimRoms/packages_apps_SlimCenter into kk4.4
Merge branch 'kk4.4' of https://github.com/SlimRoms/packages_apps_SlimCenter into kk4.4
Merge branch 'kk4.4' of https://github.com/SlimRoms/packages_apps_SlimCenter into kk4.4
Merge branch 'kk4.4' of https://github.com/SlimRoms/packages_apps_SlimCenter into kk4.4
Merge branch 'kk4.4' of https://github.com/SlimRoms/packages_apps_SlimCenter into kk4.4