Remove Fortuna generator, fix Android SecureRandom bug

Closes #914

See merge request !500

Move HTML Sanitation to DbThread

Closes #928

See merge request !506

Fix possible intent hijacking for implicit pending intents

Closes #910

See merge request !499

Don't cast Context to BaseActivity

Closes #926

See merge request !505

These counters are already reset when the user clicks the notification
or vists the area of the app the notifications are for.

This also removes a potential intent hijacking vulnerability.

Prevent multiple instances of PasswordActivity

Closes #909

See merge request !504

Don't allow other apps to open the panic prefs activity

See merge request !503

Require a system permission to open the settings activity

See merge request !501

Fix ForumActivityTest

Closes #915

See merge request !496

Validate arguments to StreamEncrypter#writeFrame()

Closes #912

See merge request !497

Simpler password strength estimation

Closes #913

See merge request !495

Run configurations for tests

See merge request !498

Set TESTING from BuildConfig

Closes #905

See merge request !494

Signed-off-by: goapunk <noobie@goapunks.net>

Sanitize all HTML before displaying it

Closes #911

See merge request !493

Require a panic app to be set before executing any panic actions

Closes #907

See merge request !492

Use ProcessBuilder instead of Runtime to start tor

See merge request !487

Fix potential NPE when getting soft reference

See merge request !490

Add a setting to disable Tor

See merge request !489

Remove placeholder tests

See merge request !491

Evidently this way of nagging myself to write tests doesn't work.

Also fixed a bug with settings namespaces.