Paste view and syntax highlighting functionallity added.

Squashed commit of the following:

commit 18c264ccb9cd17f458ca3fafa9125535ce72cd63
Merge: 5a8cb3e e0bbc48
Author: Dawid Pura <puradawid@gmail.com>
Date:   Wed Apr 9 07:24:04 2014 +0200

    Merge branch 'master' into paste_view

    Conflicts:
    	requirements.txt
    	src/apps/pastes/views.py

commit 5a8cb3ebbff4755673505f2463d56ea31f8c76d9
Author: Dawid Pura <puradawid@gmail.com>
Date:   Wed Apr 9 07:10:36 2014 +0200

    ./src/apps/pastes/urls.py fixed (choosed right view class)

commit 3c0b25aaa0fc8e2fa425397317cad6a161a2d15b
Merge: 2e015be 85c8f77
Author: Dawid Pura <puradawid@gmail.com>
Date:   Wed Apr 9 07:09:01 2014 +0200

    Mergei old branch 'master' into paste_view

    Conflicts:
    	requirements.txt
    	src/apps/pastes/views.py
    	src/templates/pastes/paste.html

commit 2e015be609f2f2ec2645e43256428b18a62e4d05
Author: Dawid Pura <puradawid@gmail.com>
Date:   Tue Apr 8 20:54:29 2014 +0200

    Changed paste_id field to pk

commit 746d8b8add8561389129e22646a2fda03071cd3c
Author: Dawid Pura <puradawid@gmail.com>
Date:   Tue Apr 8 20:48:54 2014 +0200

    Permission denied when user looks at private paste added

commit 88af2fe3de59423b73088603a7494f7e99941a17
Author: Dawid Pura <puradawid@gmail.com>
Date:   Tue Apr 8 19:19:58 2014 +0200

    Syntax highlight and css injection added

commit 93a2e60e6db44df1f5f5324764af84f765dd5375
Merge: b17b9c3 c67537f
Author: Dawid Pura <puradawid@gmail.com>
Date:   Tue Apr 8 17:58:22 2014 +0200

    Merge branch 'syntax_highlighting' of https://github.com/puradawid/djastebin into paste_view

    Conflicts:
    	src/apps/pastes/urls.py
    	src/apps/pastes/views.py

commit b17b9c34a5641ccafabd8c55529646f4b48664a7
Author: Dawid Pura <puradawid@gmail.com>
Date:   Tue Apr 8 17:48:46 2014 +0200

    Naive showing content of paste

commit c67537ff1c698558e0e4c717a3c1edaab5431137
Author: Dawid Pura <puradawid@gmail.com>
Date:   Tue Apr 8 17:09:52 2014 +0200

    Changes...

commit 7baa11078d6bf4fe209992ff673b7a0b5bfe2e3d
Author: Dawid Pura <puradawid@gmail.com>
Date:   Tue Apr 8 15:54:42 2014 +0200

    Initial creation of filter