recovery: add transparency to error images

Patch Set 1:    * added transparcency to following images

                    - icon_error.png
                    - icon_firmware_erroer.png
                    - icon_firmware_install.png

                * Preview:

                    old: http://bit.ly/ToTUUm
                    new: http://bit.ly/ToU3at

Change-Id: I1ff7957ecaeebd1f3dbabed7ab074ee709174f47
fix mounting of secondary sd card

Change-Id: Icd56d62b89af038666958f1922cee9535dbab130
error handling again

Change-Id: Ic9a43c9377fdac91d8a16dabed9d79cfda31e7c1
Merge branch 'cm-10.1' of git://github.com/CyanogenMod/android_bootable_recovery into dualboot
added some output/info

Change-Id: I9459d1356a4741859576638dee9f7425f20d3bcf
don't error out, if no modules

Change-Id: I9e681e54700abdd0728f4f770c431c76fb6e4402