Language improvements

See merge request akwizgran/briar!829

Resolve ""Decrypting database" label needs some padding"

Closes #1297

See merge request akwizgran/briar!830

Use project path for translation verification

See merge request akwizgran/briar!840

Add utility method for logging exceptions

See merge request akwizgran/briar!838

Don't hide UI on low memory if we're in the foreground

See merge request akwizgran/briar!839

Replace logging boilerplate with a static method

See merge request akwizgran/briar!837

Move logging of time measurements to FINE level

See merge request akwizgran/briar!836

Don't show Huawei protected apps button on API 24+

Closes #1291

See merge request akwizgran/briar!823

Use placeholder text for text fields and add show password button

Closes #1096 and #1288

See merge request akwizgran/briar!834

Closes #1096

Closes #1288

Use separate strings for introduction menu item and button

Closes #1316

See merge request akwizgran/briar!833

Closes #1297

Renew the wake lock every minute to avoid wake lock killers

See merge request akwizgran/briar!827

Poll for creation of Tor auth cookie file

Closes #1293

See merge request akwizgran/briar!828

Add language setting

Closes #1160 and #1222

See merge request akwizgran/briar!679

Watch for creation rather than updating of Tor cookie file

See merge request akwizgran/briar!825