Full xml properties support for file webdav

It also passes all the litmus prop tests

Basic support for file webdav

It passes all the basic litmus tests:

-> running `basic':

1. init.................. pass
2. begin................. pass
3. options............... pass
4. put_get............... pass
5. put_get_utf8_segment.. pass
6. put_no_parent......... pass
7. mkcol_over_plain...... pass
8. delete................ pass
9. delete_null........... pass
10. delete_fragment....... pass
    1. mkcol................. pass
    2. mkcol_again........... pass
    3. delete_coll........... pass
    4. mkcol_no_parent....... pass
    5. mkcol_with_body....... pass
    6. finish................ pass
       <- summary for basic': of 16 tests run: 16 passed, 0 failed. 100.0% -> runningcopymove':
11. init.................. pass
12. begin................. pass
13. copy_init............. pass
14. copy_simple........... FAIL (simple resource COPY:
    501 Not Implemented)
15. copy_overwrite........ FAIL (COPY-on-existing with 'Overwrite: F' MUST fail with 412 (RFC4918:10.6):
    501 Not Implemented)
16. copy_nodestcoll....... WARNING: COPY to non-existant collection '/litmus/nonesuch' gave '501 Not Implemented' not 409 (RFC2518:S8.8.5)
    ...................... pass (with 1 warning)
17. copy_cleanup.......... pass
18. copy_coll............. FAIL (collection COPY /litmus/ccsrc/' to/litmus/ccdest/': 501 Not Implemented)
19. copy_shallow.......... FAIL (MKCOL on `/litmus/ccsrc/': 405 Method Not Allowed)
20. move.................. WARNING: MOVE to new resource didn't give 201
    ...................... FAIL (MOVE onto existing resource with Overwrite: T /litmus/move2' to/litmus/movedest': 412 Precondition Failed)
    1. move_coll............. FAIL (collection COPY /litmus/mvsrc/' to/litmus/mvdest2/', depth infinity: 501 Not Implemented)
    2. move_cleanup.......... pass
    3. finish................ pass
       <- summary for `copymove': of 13 tests run: 7 passed, 6 failed. 53.8%
       -> 2 warnings were issued.

First release

v0.0.1

Updated dub license and removed app.d file