Mms: Fix unicode stripping

twice set of input filter on the textedit area overwrote
the strip unicode feature. lengthFilter is already
set on line 2120...so remove the other inputfilter duplicate

Change-Id: Ifce79b2bb616fd96610aac1500ddc1f8141b84de
Revert "Custom user-agent option"

This reverts commit 0bcac4bdf45587f51a7e471c083cf2f7c780384f.
Custom user-agent option

port from https://github.com/CyanogenMod/android_packages_apps_Mms/commit/afac2716ff7c43234fe1ba4a0247a25707c3a6c1
Custom user-agent is necessary for MMS access on the Softbank mobile network in Japan.

PS2: rebase
PA3: rebase

Change-Id: Ia3743360cb4660babbfa3311de016ee3b888a858
Signed-off-by: rdgate <rdgate@gmail.com>

Conflicts:

	res/values-ja/strings.xml
	res/xml/preferences.xml
	src/com/android/mms/ui/MessagingPreferenceActivity.java

Signed-off-by: Derek Cannata <thederekjay@gmail.com>