IITCm: show the plugin title in the install prompt

[AlfonsoML]

Right now the user sees this dialog when they select a plugin to install:

I don't know what's that "content://com.android...". (it doesn't show the filename) Is it good?, is it bad?, is that the file that I wanted? Am I gonna fire a nuclear missile?

At the very least it should show the Title of the plugin included in the metadata (after validating it in #275.

[johnd0e]

Thanks for pointing this.
Let's see it as sub-task of #257.