Add ace-modes to javascript manifest, fixes #7513

##### What does this MR do?

This PR adds most of the modes of ace editor to the javascript manifest. With this PR, there is syntax highlighting while editing a file. I've included all modes which file size is less than 120k.

##### Why was this MR needed?

Currently, when opening a file (e.g. a markdown), ace editor tries to load the mode file. Since it's not in the manifest, a 404 error is raised behind the scenes, and no syntax highlighting is available.

##### What are the relevant issue numbers / Feature requests?

This PR fixes #7513 as well as http://feedback.gitlab.com/forums/176466-general/suggestions/6300274-syntax-highlighting-in-editor-while-editing-and-cr

/cc @cirosantilli 

##### Screenshots (If appropiate)

![screenshot 2014-08-18 12 24 15](https://cloud.githubusercontent.com/assets/278301/3950277/1abf0628-26c3-11e4-8de1-69dc7f919236.png)

![screenshot 2014-08-18 12 26 02](https://cloud.githubusercontent.com/assets/278301/3950283/23d50cd0-26c3-11e4-9bd1-7d2c18a86d24.png)