Recommended browsers, Orfox config, link to app store from browser list

app/src/main/java/net/i2p/android/help/Browser.java

app/src/main/java/net/i2p/android/help/BrowserAdapter.java

...c/main/java/net/i2p/android/help/BrowserListFragment.java

app/src/main/res/drawable-hdpi/ic_shop_white_24dp.png

app/src/main/res/drawable-hdpi/ic_stars_white_24dp.png

app/src/main/res/drawable-mdpi/ic_shop_white_24dp.png

app/src/main/res/drawable-mdpi/ic_stars_white_24dp.png

app/src/main/res/drawable-xhdpi/ic_shop_white_24dp.png

app/src/main/res/drawable-xhdpi/ic_stars_white_24dp.png

app/src/main/res/drawable-xxhdpi/ic_shop_white_24dp.png

app/src/main/res/drawable-xxhdpi/ic_stars_white_24dp.png

app/src/main/res/layout/listitem_browser.xml

app/src/main/res/raw/help_info_guardianproject_browser.html

app/src/main/res/raw/help_info_guardianproject_orfox.html

app/src/main/res/raw/help_unsupported_browser.html

app/src/main/res/values/arrays.xml

app/src/main/res/values/dimens.xml