Merge branch 'release/0.7.0' into devel
Added application footer, updated Readme
Fixed stylus task, added files for `export` mode

Stylus grunt task fixed for inlining images and compressing css. Added
scripts and view for export mode.
Routes divided to http and socket routes, added 'export model' routes
Added feature export into app, fixed connections data dir

Tool for exporting model added into app (icon at toolbar). Fixed path
to `connections.json` file.
Added simple input dialog for input table name when new table is created
Fixed assets of exported model, added save/load for it

Exported model now can save/load to/from HTML5 LocalStorage (if it is
available).
Fixed saving of actual table position when it is moved
Fixed displaying columns at TableDialog

Columns displayed at TableDialog should been displayed independetly on
previous displayed table's columns.
Fixed id of the exported app to be realy unique

App id should be name and db id independent (two models can have same).
Added `infoDialog` and it's using at exported model
App restruturalized, added `dm.core` namespace
Adding tools into toolbar moved to main script, added `nib` import
Fixed creating model from JSON and loading at `export` mode
Removed button `cancel` from LoadModel dialog after app start
Bumped version to 0.8.0
v0.8.0 - added model export, app restruturalized, added Info dialog

- added model export function
- added `infoDialog` and it's using at exported model
- fixed saving table position when it is moved
- fixed displaying columns at TableDialog
- definition of tools at toolbar moved into main script
- removed button `cancel` from LoadModel dialog after intro
- routes divided to http and socket routes