Use GET instead of POST on roadmap (#718), gantt and calendar forms.
Merged r1379 to r1385 from trunk.
tagged version 0.7.0
Fixed: Updating tickets add a time log with zero hours (#1147).
Fixed: Home, Logout, Login links are absolute (#1122, #1145).
Thai translation added (Gampol Thitinilnithi, #1136).
Display group name in the member list on project overview.
Fixed: user removed from group when :group_id param is not submitted.
Move the project member list rendering to an helper.
Fixed: Search for target version of "none" fails with postgres 8.3 (#1134).
