Arrange member groups depending on their availability rework

#### Purpose

Rework PR https://github.com/Benglin/Dynamo/pull/36 according the comment https://github.com/Benglin/Dynamo/pull/36#issuecomment-54774092.

#### Modifications

1. TextBlocks are created in XAML.
2. TextBlock's `Visibility`, `Text`, `FontWeight` properties are bound in XAML.
3. Converters created for `Text` and `FontWeight` properties.
4. Switching between styles is done in converter.

#### Additional references

[Link](http://adsk-oss.myjetbrains.com/youtrack/issue/MAGN-4521) to YouTrack task.

#### Reviewers

@aosyatnik, please take a look. 
It is not true.

In initial PR https://github.com/Benglin/Dynamo/pull/36 I have presented some possible views. Let me add them here:

#### Usual view

![strict sp](https://cloud.githubusercontent.com/assets/8158551/4111773/55c0090c-3212-11e4-9f8f-36921ee50528.png).

#### Another View 1

![sp view 1](https://cloud.githubusercontent.com/assets/8158551/4111798/12208612-3213-11e4-8404-bea6021adbdf.PNG)

#### Another View 2

The same as View 1 but without Query members. Only Actions.