Update bootstrap LESS

[FezVrasta]

Could be possible update Bootstrap?

I'm working with a table inside a striped table:

<table class="table-striped">
  <tbody>
    <tr>
        <td>
            correctly striped
            <table>
                <tbody>
                    <tr>
                        <td>
                            still striped
                        </td>
                    </tr>
                </tbody>
            </table>
        </td>
    </tr>
  </tbody>
</table>

The inner table is striped even without the .table-striped class.
This bug was fixed in newer versions of Bootstrap, see:

old version:

brackets/src/styles/bootstrap/tables.less

Line 156 in fc20756

.table-striped {

new version:
https://github.com/twbs/bootstrap/blob/fab10b643eb1a2038fb31305f0b038b7a9a8554d/less/tables.less#L108

Thanks.

[dangoor]

Whether or not we upgrade Bootstrap ties in with how we ultimately decide to approach theming of the Brackets UI. I've made a comment on the card for the UI theme and think we should tackle this with that story.

[FezVrasta]

Could be possible at least fix this row so I've not to use hacks on my LESS without wait a complete theme integration in Brackets? It need just an additional character.

[dangoor]

@FezVrasta That seems reasonable. Can you submit a pull request?

[FezVrasta]

Done, but GitHub doesn't let me upload the commit because it says the storage is temporarily offline :\ My usual luck...