Don't mix JUnit 4's @Test with JUnit3's TestCase.

This is the world's most boring merge request. Android Studio was complaining about using JUnit 4's @Test annotations with JUnit 3's TestCase, so I fixed it.

Most of the changes come from Android Studio organising imports in a different order from Eclipse.

See merge request !8

Create hidden service in a subdirectory. #161

The permissions for the parent directory are too permissive (775) for Tor 0.2.7.5. Store the hidden service hostname and private key in a subdirectory with permissions 700.

See merge request !5

improved git ignore

closes #160 

See merge request !4

Merge branch '160-improve-gitignore' of https://code.briarproject.org/akwizgran/briar into 160-improve-gitignore

Conflicts:
	.gitignore

Touching startup failure notification now shows details

The text of the startup failure notification is unhelpful due to lack of
space. Touching the notification now launches an activity that gives details
of the problem and what can be done about it.

Closes #38

See merge request !7

Build with SDK 23, continue to target SDK 22. #162

This will allow people to download Android Studio, check out and build the project without extra steps. Compiling with the latest SDK is recommended even if your target is older (as ours is).

See merge request !6

H2 was failing to load its driver class on OpenJDK 6 because the code was compiled for Java 7.

The text of the startup failure notification is unhelpful due to lack of
space. Touching the notification now launches an activity that gives details
of the problem and what can be done about it.

Closes #38

Show setup page error messages by the relevant text box

Closes #159 

See merge request !3

Hide password strength meter when confirming password

Closes #100

I opted to hide the strength meter because:

* more extensive changes would have been required to set the strength meter to 100% red.
* IMHO it would lead to confusion as to the meaning of the strength meter.
* the "passwords do not match" error should eventually become a proper error of the confirm EditText, not a separate label.

See merge request !2

Clear the password field if wrong password is entered

Closes #150

See merge request !1

The permissions for the parent directory are too permissive (775) for Tor 0.2.7.5. The subdirectory is created with permissions 700.

"synchLock" will become confusing when we have lots of objects with "sync" in the name.